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Matcha is having a moment. What are the health benefits of this green tea drink?

<a href="https://theconversation.com/profiles/evangeline-mantzioris-153250">Evangeline Mantzioris</a>, <a href="https://theconversation.com/institutions/university-of-south-australia-1180">University of South Australia</a> Matcha has experienced a surge in popularity in recent months, leading to reports of <a href="https://www.smh.com.au/goodfood/sydney-eating-out/global-matcha-shortage-hits-australia-as-skyrocketing-popularity-rivals-coffee-20241101-p5kn6v.html">global shortages</a> and price increases. If you haven’t been caught up in the craze, matcha is a powdered version of green tea. On a cafe menu you might see a hot or iced matcha latte, or even a matcha-flavoured cake or pastry. A quick google brings up <a href="https://www.foodandwine.com/tea/matcha-tea/matcha-recipes">countless recipes</a> incorporating matcha, both sweet and savoury. Retailers and cafe owners <a href="https://www.smh.com.au/goodfood/sydney-eating-out/global-matcha-shortage-hits-australia-as-skyrocketing-popularity-rivals-coffee-20241101-p5kn6v.html">have suggested</a> the main reasons for matcha’s popularity include its “instagrammable” looks and its purported health benefits. But what are the health benefits of matcha? Here’s what the evidence says. <h2>First, what is matcha?</h2> <a href="https://www.mdpi.com/1420-3049/26/1/85">Matcha</a> is a finely ground powder of green tea leaves, which come from the plant Camellia sinensis. This is the same plant used to make green and black tea. However, the <a href="https://naokimatcha.com/blogs/articles/how-matcha-is-made-in-japan">production process</a> differentiates matcha from green and black tea. For matcha, the tea plant is grown in shade. Once the leaves are harvested, they’re steamed and dried and the stems are removed. Then the leaves are carefully ground at controlled temperatures to form the powder. The <a href="https://pmc.ncbi.nlm.nih.gov/articles/PMC6571865/">production process</a> for green tea is simpler. The leaves are picked from the unshaded plants, heated and then dried. We then steep the dried leaves in hot water to get tea (whereas with matcha the whole leaf is consumed). With black tea, after the leaves are picked they’re exposed to air, which leads to oxidation. This makes the leaves black and gives the tea a different flavour. <h2>A source of phytonutrients</h2> Phytonutrients are <a href="https://theconversation.com/phytonutrients-can-boost-your-health-here-are-4-and-where-to-find-them-including-in-your-next-cup-of-coffee-132100">chemical compounds found in plants</a> which have a range of benefits for human health. Matcha contains several. Chlorophyll gives plants such as Camellia sinensis their green colour. There’s some evidence chlorophyll may have <a href="https://www.mdpi.com/2223-7747/12/7/1533">health benefits</a> – including anti-inflammatory, anti-cancer and anti-obesity effects – due to its antioxidant properties. Antioxidants neutralise free radicals, which are unstable molecules that harm our cells. Theanine has been shown to <a href="https://www.mdpi.com/2504-3900/91/1/32">improve sleep</a> and <a href="https://link.springer.com/article/10.1007/s11130-019-00771-5?crsi=662497574&cicada_org_src=healthwebmagazine.com&cicada_org_mdm=direct">reduce stress and anxiety</a>. The only <a href="https://www.sciencedirect.com/topics/medicine-and-dentistry/theanine">other known</a> dietary source of theanine is mushrooms. Caffeine is a phytonutrient we know well. Aside from increasing alertness, caffeine has also demonstrated <a href="https://www.tandfonline.com/doi/full/10.1080/10408398.2022.2074362?casa_token=ADALIs6M3iAAAAAA%3AXpY35se0zLddAEIbZAaeCcDaNWm94s2WJaDHfXDRvVZgYq_xTxsCFuvtrtNXMXAL9uNIvLlYzO30aA#abstract">antioxidant effects</a> and some protection against a range of chronic and neurodegenerative diseases. However, too much caffeine can have negative side effects. Interestingly, shading the plants while growing appears to <a href="https://scijournals.onlinelibrary.wiley.com/doi/pdfdirect/10.1002/jsfa.9112?casa_token=KxVD9i9p4BsAAAAA:OwGTauXFHAndyJkam8WuXrmGQ2k1kaSRu5pOqJOrhSyRSeWkDwdrI23qaD5WVH1HGqZLFdsjP9ZTvolw">change the nutritional composition</a> of the leaf and may lead to higher levels of these phytonutrients in matcha compared to green tea. Another compound worth mentioning is called catechins, of which there are several different types. Matcha powder similarly has <a href="https://theconversation.com/matcha-tea-what-the-current-evidence-says-about-its-health-benefits-202782">more catechins</a> than green tea. They are strong antioxidants, which <a href="https://link.springer.com/article/10.1186/s41702-020-0057-8">have been shown</a> to have protective effects against bacteria, viruses, allergies, inflammation and cancer. Catechins <a href="https://www.sciencedirect.com/topics/medicine-and-dentistry/catechin#:%7E:text=Catechin%20is%20naturally%20present%20in,containing%20many%20catechins%20%5B130%2C131%5D.">are also found</a> in apples, blueberries and strawberries. <h2>What are the actual health benefits?</h2> So we know matcha contains a variety of phytonutrients, but does this translate to noticeable health benefits? A review published in 2023 identified only <a href="https://www.sciencedirect.com/science/article/pii/S2665927122002180">five experimental studies</a> that have given matcha to people. These studies gave participants about 2–4g of matcha per day (equivalent to 1–2 teaspoons of matcha powder), compared to a placebo, as either a capsule, in tea or in foods. Matcha decreased stress and anxiety, and improved memory and cognitive function. There was no effect on mood. A <a href="https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0309287">more recent study</a> showed 2g of matcha in older people aged 60 to 85 improved sleep quality. However, in <a href="https://www.mdpi.com/2072-6643/16/17/2907">younger people</a> aged 27 to 64 in another study, matcha had little effect on sleep. A <a href="https://link.springer.com/article/10.1007/s11130-022-00998-9">study in people with obesity</a> found no difference in the weight loss observed between the matcha group and the control group. This study did not randomise participants, and people knew which group they had been placed in. It could be hypothesised that given you consume all of the leaf, and given levels of some phytonutrients may be higher due to the growing conditions, matcha may have more nutritional benefits than green tea. But to my knowledge there has been no direct comparison of health outcomes from green tea compared to matcha. <h2>There’s lots of evidence for green tea</h2> While to date a limited number of studies have looked at matcha, and none compared matcha and green tea, there’s quite a bit of research on the health benefits of drinking green tea. A <a href="https://www.sciencedirect.com/science/article/pii/S0944711317300867?casa_token=dpbAEQQ7Is4AAAAA:U6aggqZM_G0KJ8hkhx0TGSvQywr4utlgKzwUnUj9x5t9eWd-FKENjbTvUv6s4TBTaPYrob-qQkk">systematic review of 21 studies</a> on green tea has shown similar benefits to matcha for improvements in memory, plus evidence for mood improvement. There’s also evidence green tea provides other health benefits. Systematic reviews have shown green tea leads to <a href="https://onlinelibrary.wiley.com/doi/full/10.1002/ptr.6697?casa_token=1eAbmeGillYAAAAA%3ABNGBB6EuRFXIDWHgsa7E798wfC0MQK2r3yOmAlFzR2sxyD9Xt837VoCel0l6Tsh3RRO19t-YUm1GqO7Y">weight loss in people with obesity</a>, lower levels of <a href="https://link.springer.com/article/10.1186/s12937-020-00557-5">certain types of cholesterol</a>, and <a href="https://journals.lww.com/md-journal/fulltext/2020/02070/Effect_of_green_tea_supplementation_on_blood.36.aspx/1000">reduced blood pressure</a>. Green tea may also <a href="https://www.nature.com/articles/s41430-020-00710-7">lower the risk of certain types of cancer</a>. So, if you can’t get your hands on matcha at the moment, drinking green tea may be a good way to get your caffeine hit. Although the evidence on green tea provides us with some hints about the health benefits of matcha, we can’t be certain they would be the same. Nonetheless, if your local coffee shop has a good supply of matcha, there’s nothing to suggest you shouldn’t keep enjoying matcha drinks. However, it may be best to leave the matcha croissant or cronut for special occasions. When matcha is added to foods with high levels of added sugar, salt and saturated fat, any health benefits that could be attributed to the matcha may be negated.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/242775/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/evangeline-mantzioris-153250">Evangeline Mantzioris</a>, Program Director of Nutrition and Food Sciences, Accredited Practising Dietitian, <a href="https://theconversation.com/institutions/university-of-south-australia-1180">University of South Australia</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/matcha-is-having-a-moment-what-are-the-health-benefits-of-this-green-tea-drink-242775">original article</a>.

Food & Wine

The science of the ideal salad dressing

<a href="https://theconversation.com/profiles/nathan-kilah-599082">Nathan Kilah</a>, <a href="https://theconversation.com/institutions/university-of-tasmania-888">University of Tasmania</a> Summer means salads. And salads are even more delicious with a good dressing. Most salad dressings are temporarily stable mixtures of oil and water known as emulsions. But how do salad dressing emulsions form? And how can we enhance our emulsions for better salads and more? <h2>Oil and water don’t mix</h2> It’s accepted wisdom that oil and water don’t mix. The water and oil molecules have distinct chemical properties that don’t interact well together. You may have seen this if you’ve attempted to make a salad dressing by shaking together oil and vinegar (which is mostly water), which gives a temporary suspension that quickly separates. There is a large energy cost to breaking apart and mixing the water and oil layers. The secret to blending them together is to add an extra ingredient known as a “surfactant” or emulsifier. The name surfactant is derived from “surface active”. It highlights that these molecules work at the surface or interface to bridge the interactions between the oil and water. This is similar to how <a href="https://theconversation.com/what-is-sodium-lauryl-sulfate-and-is-it-safe-to-use-125129">detergents</a> are able to remove grease from your dishes. Many vinaigrette recipes call for emulsifiers without specifically mentioning their crucial emulsifying role. Key examples are mustard and garlic, which contain “mucilage” – a mix of carbohydrates – that can act as emulsifiers. So if your vinegar/oil salad dressings are separating, make sure you’re adding enough of these ingredients (which also contain <a href="https://theconversation.com/hate-vegetables-you-might-have-super-taster-genes-74428">wonderful flavour chemicals</a>). Commercial salad dressings also contain naturally sourced emulsifying carbohydrates. These will often be listed on the ingredients as generic “vegetable gum” or similar, and you may need to <a href="https://theconversation.com/busting-the-myth-that-all-food-additives-are-bad-a-quick-guide-for-label-readers-82883">read the label</a> and delve a little deeper into the <a href="https://www.foodstandards.gov.au/consumer/additives/additiveoverview/Documents/Food%20Additive%20Code%20Numbers%20%28July%202014%29.pdf">food additive number</a> to find out the source. Researchers have raised questions about <a href="https://theconversation.com/food-additives-and-chronic-disease-risk-what-role-do-emulsifiers-play-38492">synthetic emulsifiers used in processed food</a>, as studies in mice suggest they have health risks. It’s too early to say exactly what this means for humans. <h2>Shake it ‘til you make it</h2> Mixing is key to dispersing oil in water. While shaking a jar is convenient, a whisk or food processor will give a more complete emulsion. The white (or opaque) colour of many emulsions is due to the formation of microdroplets that scatter light. These mechanical mixing methods are even more essential for the formation of so-called “permanent emulsions” such as mayonnaise. Mayonnaise is an emulsion of oil in water, but egg yolk is the key emulsifier. Egg yolks contain long molecules called <a href="https://link.springer.com/referenceworkentry/10.1007/978-3-642-36605-5_28">phospholipids</a> that are able to interact with both the oil layer and the water. Mayonnaise is an impressively stable emulsion, which is why is can be sold in a shelf-stable form. But it isn’t infinitely stable; heating the mayonnaise emulsion will cause it to split. Perhaps you’ve hurriedly prepared a potato salad and added a mayonnaise-based dressing before the potatoes have cooled down? Or toasted a sandwich spread with mayonnaise? (Incidentally, adding mayonnaise to the outside of a toasted sandwich is an excellent path to some <a href="https://theconversation.com/kitchen-science-from-sizzling-brisket-to-fresh-baked-bread-the-chemical-reaction-that-makes-our-favourite-foods-taste-so-good-58577">delicious and crispy chemical reactions</a>.) The heat destabilises the emulsion and the separate oil and water phases will reform. Depending on the mixture, split emulsions may be recovered by adding more emulsifier and re-whisking or re-mixing. Hollandaise sauce is a notoriously difficult emulsion to prepare. The traditional hollandaise method involves whisking egg yolk, water, and lemon juice over a low heat, then slowly adding melted butter with further whisking. Not only can the emulsion split, but you can also overcook the added emulsifying egg yolk. The key to a successful hollandaise emulsion is separating the butter into fine, dispersed droplets, giving a thick and opaque mixture, but without cooking the eggs. Adding the butter too quickly or without sufficient mixing can give a split sauce. Using an <a href="https://www.seriouseats.com/foolproof-2-minute-hollandaise-recipe">immersion blender</a> can help, as can controlling the temperature of the melted butter. You might get a more consistently emulsified sauce with far less strain on your wrists. <h2>You’ve got me feeling emulsions</h2> Emulsions are used in many more places than salads and sauces. Most medicated creams, cosmetics and lotions are emulsions of oils and water, which is why they look white. Gardeners might be familiar with a mixture known as “<a href="https://www.abc.net.au/gardening/how-to/horticultural-oils/9428876">white oil</a>” – a mixture of vegetable oil and detergent. This brew, when diluted in water, is an inexpensive, effective, yet mild insecticide. Commercial versions often contain other pesticides, so make sure you read the label. Modern <a href="https://www.acs.org/education/whatischemistry/landmarks/acrylicemulsion.html">acrylic paints use emulsions</a> for both their manufacturing and application. The emulsions suspend the paint polymers in a water base. The water from the paint evaporates, leaving a film of paint polymers that can’t be re-dispersed into water. This clever chemical trick has saved huge quantities of oil-derived solvents from being used, <a href="https://theconversation.com/why-solvents-can-affect-brain-health-even-at-low-levels-of-exposure-98081">inhaled</a>, and emitted into the environment from traditional oil-based paints. Modern vaccines use <a href="https://theconversation.com/adjuvants-the-unsung-heroes-of-vaccines-156548">emulsions to increase the immune systems response</a>. Other common emulsions are inks, <a href="https://theconversation.com/how-does-ice-cream-work-a-chemist-explains-why-you-cant-just-freeze-cream-and-expect-results-205038">ice cream</a>, margarine and hair products, to name just a few. So next time you’re making a salad, check your emulsions. Opposites don’t attract, but mixing them with the right chemistry can give a delicious result.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/216159/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/nathan-kilah-599082">Nathan Kilah</a>, Senior Lecturer in Chemistry, <a href="https://theconversation.com/institutions/university-of-tasmania-888">University of Tasmania</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/the-science-of-the-ideal-salad-dressing-216159">original article</a>.

Food & Wine

MSG is back. Is the idea it’s bad for us just a myth or food science?

<a href="https://theconversation.com/profiles/evangeline-mantzioris-153250">Evangeline Mantzioris</a>, <a href="https://theconversation.com/institutions/university-of-south-australia-1180">University of South Australia</a> MSG is making a comeback. The internet’s favourite cucumber salad recipe includes fish sauce, cucumber, garlic and – as the video’s creator Logan tells us with a generous sprinkle from the bag – “MSG, obviously”. But for many of us, it’s not obvious. Do you have a vague sense MSG is unhealthy but you’re not sure why? Here is the science behind monosodium glutamate, how it got a bad rap, and whether you should add it to your cooking. <h2>What is MSG?</h2> Monosodium glutamate (MSG) is a sodium salt of glutamic acid, one of the amino acids that make up proteins. It occurs naturally in <a href="https://www.tandfonline.com/doi/full/10.1080/10942912.2017.1295260#d1e167">foods</a> such as mature cheeses, fish, beef, mushrooms, tomatoes, onion and garlic. It provides their savoury and “meaty” flavour, known as <a href="https://www.sciencedirect.com/science/article/pii/S0022316622140186">umami</a>. MSG has been used to season food for <a href="https://wjpsonline.com/index.php/wjps/article/view/effects-monosodium-glutamate-human-health-review">more than 100 years</a>. Traditionally it <a href="https://pubs.acs.org/doi/epdf/10.1021/ed081p347?ref=article_openPDF">was extracted</a> from seaweed broth, but now it’s made by fermenting starch in sugar beets, sugar cane and molasses. Today it’s widely used as a flavour enhancer in many dishes and pre-packaged goods, including soups, condiments and processed meats. There is no chemical difference between the MSG found in food and the additive. <h2>Is it safe?</h2> For most people, yes. MSG is a safe and authorised additive, according to the Australian agency that regulates food. This corresponds with food standards in the <a href="https://www.fda.gov/food/food-additives-petitions/questions-and-answers-monosodium-glutamate-msg">United States</a>, <a href="https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX%3A02008R1333-20201223#tocId3">European Union and United Kingdom</a>. Two major <a href="https://www.foodstandards.gov.au/sites/default/files/consumer/additives/msg/Documents/MSG%20Technical%20Report.pdf">safety reviews</a> have been conducted: one in 1987 by a United Nations expert committee and another 1995 by the Federation of American Societies for Experimental Biology. Both concluded MSG was safe for the general population. In 2017 the <a href="https://www.efsa.europa.eu/en/efsajournal/pub/4910">European Food Safety Authority</a> updated its stance and set a recommended limit based on body weight, aimed to prevent headaches and increased blood pressure. That limit is still higher than most people consume. The authority says an 80kg person should not have more than 2.4g of added MSG per day. <a href="https://www.nature.com/articles/1602526">For reference</a>, Europeans average less than a gram per day (0.3-1 gram), while in Asia intake is somewhere between 1.2-1.7 grams a day. Food Standards Australia New Zealand says the European update does not raise any new safety concerns not already assessed. <h2>Isn’t it bad for me?</h2> Despite the evidence, the idea MSG is dangerous persists. Its notorious reputation can be traced back to a <a href="https://news.colgate.edu/magazine/2019/02/06/the-strange-case-of-dr-ho-man-kwok/">hoax letter</a> published in the <a href="https://www.nejm.org/doi/full/10.1056/NEJM196805162782014">New England Journal of Medicine</a> in 1968. A doctor claiming to have experienced palpitations, numbness and fatigue after eating at a Chinese restaurant suggested MSG could be to blame. With a follow-up article in the <a href="https://www.nytimes.com/1968/05/19/archives/-chinese-restaurant-syndrome-puzzles-doctors.html">New York Times</a>, the idea of “Chinese Restaurant Syndrome” took off. Eating MSG was associated with a range of symptoms, including headache, hives, throat swelling, itching and belly pain. However an <a href="https://www.sciencedirect.com/science/article/pii/027869159390012N?via%3Dihub">early randomised control trial</a> showed no difference in these symptoms between people who were given MSG versus a placebo. This has since been confirmed in a <a href="https://ift.onlinelibrary.wiley.com/doi/full/10.1111/1541-4337.12448">review of many studies</a>. <h2>Can MSG cause reactions?</h2> A very small percentage of people may have hypersensitivities to MSG. The reported reaction is now known as MSG symptom complex, rather than so-called Chinese restaurant syndrome, with its <a href="https://www.jandonline.org/article/S2212-2672(21)00068-X/abstract#:%7E:text=A%20New%20York%20Times%20piece,connecting%20MSG%20to%20health%20outcomes.">problematic</a> racial connotations. Symptoms are usually mild, short-term and don’t need treatment. <a href="https://www.sciencedirect.com/science/article/pii/S0091674999703714">One study</a> looked at 100 people with asthma, 30 of whom believed they had hypersensitivities to MSG. However when participants were blinded to whether they were consuming MSG, not one reported a reaction. If you believe you do react to added MSG, it’s relatively easy to avoid. In Australia, it is <a href="https://www.foodstandards.gov.au/consumer/additives/msg">listed</a> in ingredients as either monosodium glutamate or flavour enhancer 621. <h2>Is it better than table salt?</h2> Using MSG instead of regular salt may help <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6893472/">reduce</a> your overall sodium intake, as MSG <a href="https://www.medicalnewstoday.com/articles/msg-what-the-science-says-about-its-safety#Uses-of-MSG">contains</a> about one third the amount of sodium. <a href="https://pubmed.ncbi.nlm.nih.gov/21372742/">One study</a> found people who ate soup seasoned with MSG rather than salt actually liked it more. They still found it salty to taste, but their sodium intake was reduced by 18%. MSG still contains sodium, so high use is associated with increased <a href="https://pubmed.ncbi.nlm.nih.gov/21372742/">blood pressure</a>. If you’re using MSG as a substitute and you have high blood pressure, you should closely monitor it (just as you would with other salt products). <h2>Should I use MSG in my cooking?</h2> If you want to – yes. Unless you are one of the rare people with hypersensitivities, enhancing the flavour of your dish with a sprinkle of MSG will not cause any health problems. It could even help reduce how much salt you use. If you’re <a href="https://www.tandfonline.com/doi/full/10.1080/25765299.2020.1807084#d1e199">vegetarian or vegan</a>, cooking with MSG could help add the umami flavour you may miss from animal products such as meat, fish sauce and cheese. But buying foods with added MSG? Be aware, many of them will also be <a href="https://www.cambridge.org/core/journals/public-health-nutrition/article/un-decade-of-nutrition-the-nova-food-classification-and-the-trouble-with-ultraprocessing/2A9776922A28F8F757BDA32C3266AC2A">ultra-processed</a> and it’s that – not the MSG – that’s associated with poor physical and mental <a href="https://www.mdpi.com/2072-6643/14/1/174">health outcomes</a>.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/237871/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/evangeline-mantzioris-153250">Evangeline Mantzioris</a>, Program Director of Nutrition and Food Sciences, Accredited Practising Dietitian, <a href="https://theconversation.com/institutions/university-of-south-australia-1180">University of South Australia</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/msg-is-back-is-the-idea-its-bad-for-us-just-a-myth-or-food-science-237871">original article</a>.

Food & Wine

What causes food cravings? And what can we do about them?

<a href="https://theconversation.com/profiles/gabrielle-weidemann-91497">Gabrielle Weidemann</a>, <a href="https://theconversation.com/institutions/western-sydney-university-1092">Western Sydney University</a> and <a href="https://theconversation.com/profiles/justin-mahlberg-1634725">Justin Mahlberg</a>, <a href="https://theconversation.com/institutions/monash-university-1065">Monash University</a> Many of us try to eat more fruits and vegetables and less ultra-processed food. But why is sticking to your goals so hard? High-fat, sugar-rich and salty foods are simply so enjoyable to eat. And it’s not just you – we’ve evolved that way. These foods <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5928395/">activate</a> the brain’s reward system because in the past they were <a href="https://doi.org/10.1037/a0030684">rare</a>. Now, they’re all around us. In wealthy modern societies we are bombarded by <a href="https://theconversation.com/junk-food-is-promoted-online-to-appeal-to-kids-and-target-young-men-our-study-shows-234285">advertising</a> which intentionally reminds us about the sight, smell and taste of calorie-dense foods. And in response to these powerful cues, our brains respond just as they’re designed to, triggering <a href="https://doi.org/10.1111/obr.12354">an intense urge</a> to eat them. Here’s how food cravings work and what you can do if you find yourself hunting for sweet or salty foods. <h2>What causes cravings?</h2> A food craving is an intense desire or urge to eat something, <a href="https://pubmed.ncbi.nlm.nih.gov/15589112/">often focused on a particular food</a>. We are programmed to learn how good a food tastes and smells and where we can find it again, especially if it’s high in fat, sugar or salt. Something that <a href="https://doi.org/10.1111/obr.12354">reminds us</a> of enjoying a certain food, such as an eye-catching ad or delicious smell, can cause us to <a href="https://doi.org/10.1111/obr.12354">crave it</a>. The cue triggers a physical response, increasing saliva production and gastric activity. These responses are relatively automatic and difficult to control. <h2>What else influences our choices?</h2> While the effect of cues on our physical response is relatively automatic, what we do next is influenced by <a href="https://journals.sagepub.com/doi/pdf/10.1177/1090198107303308">complex</a> factors. Whether or not you eat the food might depend on things like cost, whether it’s easily available, and if eating it would align with your health goals. But it’s usually hard to keep healthy eating in mind. This is because we tend to prioritise a more immediate reward, like the <a href="https://doi.org/10.1016/j.physbeh.2010.04.029">pleasure of eating</a>, over one that’s delayed or abstract – including health goals that will make us feel good in the long term. <a href="https://doi.org/10.1016/S0022-3999(00)00076-3">Stress</a> can also make us eat more. When hungry, we <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8656885/">choose larger portions</a>, underestimate calories and find eating more <a href="https://www.sciencedirect.com/science/article/pii/S0195666315000793">rewarding</a>. <h2>Looking for something salty or sweet</h2> So what if a cue prompts us to look for a certain food, but it’s not available? <a href="https://doi.org/10.1016/j.appet.2014.04.005">Previous research</a> suggested you would then look for anything that makes you feel good. So if you saw someone eating a doughnut but there were none around, you might eat chips or even drink alcohol. But our <a href="https://doi.org/10.1016/j.appet.2024.107640">new research</a> has confirmed something you probably knew: it’s more specific than that. If an ad for chips makes you look for food, it’s likely a slice of cake won’t cut it – you’ll be looking for something salty. Cues in our environment don’t just make us crave food generally, they prompt us to look for certain food “categories”, such as salty, sweet or creamy. <h2>Food cues and mindless eating</h2> Your <a href="https://core.ac.uk/download/pdf/161283824.pdf">eating history</a> and <a href="https://doi.org/10.1002/eat.24179">genetics</a> can also make it harder to suppress food cravings. But don’t beat yourself up – relying on willpower alone is <a href="https://doi.org/10.1016/j.appet.2015.01.004">hard</a> for almost everyone. Food cues are so powerful they can prompt us to <a href="https://doi.org/10.1177/0956797613484043">seek</a> out a certain food, even if we’re not overcome by a particularly <a href="https://doi.org/10.1177/0956797613484043">strong urge</a> to eat it. The effect is more intense if the food is easily available. This helps explain why we can eat an entire large bag of chips that’s in front of us, even though our pleasure decreases as we <a href="https://doi.org/10.1016/0031-9384(81)90310-3">eat</a>. Sometimes we use finishing the packet as the signal to stop <a href="https://doi.org/10.1016/j.physbeh.2015.03.025">eating</a> rather than hunger or desire. <h2>Is there anything I can do to resist cravings?</h2> We largely don’t have control over cues in our environment and the cravings they trigger. But there are some ways you can try and control the situations you make food choices in. <ul> <li> Acknowledge your craving and think about a healthier way to satisfy it. For example, if you’re craving chips, could you have lightly-salted nuts instead? If you want something sweet, you could try fruit. </li> <li> Avoid shopping when you’re hungry, and make a list beforehand. Making the most of supermarket “click and collect” or delivery options can also help avoid ads and impulse buys in the aisle. </li> <li> At home, have fruit and vegetables easily available – and easy to see. Also have other nutrient dense, fibre-rich and unprocessed foods on hand such as nuts or plain yoghurt. If you can, remove high-fat, sugar-rich and salty foods from your environment. </li> <li> Make sure your goals for eating are <a href="https://www.aafp.org/pubs/fpm/issues/2018/0300/p31.html">SMART</a>. This means they are specific, measurable, achievable, relevant and time-bound. </li> <li> Be kind to yourself. Don’t beat yourself up if you eat something that doesn’t meet your health goals. Just keep on trying.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/237035/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> </li> </ul> <a href="https://theconversation.com/profiles/gabrielle-weidemann-91497">Gabrielle Weidemann</a>, Associate Professor in Psychological Science, <a href="https://theconversation.com/institutions/western-sydney-university-1092">Western Sydney University</a> and <a href="https://theconversation.com/profiles/justin-mahlberg-1634725">Justin Mahlberg</a>, Research Fellow, Pyschology, <a href="https://theconversation.com/institutions/monash-university-1065">Monash University</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/what-causes-food-cravings-and-what-can-we-do-about-them-237035">original article</a>.

Food & Wine

Is still water better for you than sparkling water?

<a href="https://theconversation.com/profiles/christian-moro-121754">Christian Moro</a>, <a href="https://theconversation.com/institutions/bond-university-863">Bond University</a> and <a href="https://theconversation.com/profiles/charlotte-phelps-1187658">Charlotte Phelps</a>, <a href="https://theconversation.com/institutions/bond-university-863">Bond University</a> Still or sparkling? It’s a question you’ll commonly hear in a café or restaurant and you probably have a preference. But is there any difference for your health? If you love the fizz, here’s why you don’t have to pass on the sparkling water. <h2>What makes my water sparkle?</h2> This article specifically focuses on comparing still filtered water to carbonated filtered water (called “sparkling water” or “unflavoured seltzer”). Soda water, mineral water, tonic water and flavoured water are similar, but not the same product. The bubbles in sparkling water are created by adding carbon dioxide to filtered water. It reacts to produce carbonic acid, which makes sparkling water more acidic (a pH of <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5747581/">about 3.5</a>) than still (closer to neutral, with a pH around 6.5-8.5). <h2>Which drink is healthiest?</h2> Water is the best way to hydrate our bodies. Research shows when it comes to <a href="https://pubmed.ncbi.nlm.nih.gov/26702122/">hydration</a>, still and sparkling water are <a href="https://www.jstage.jst.go.jp/article/jnsv/58/5/58_333/_article">equally effective</a>. Some people believe water is healthier when it comes from a sealed bottle. But in Australia, tap water is <a href="https://www.waterquality.gov.au/guidelines/drinking-water">monitored very carefully</a>. Unlike bottled water, it also has the added benefit of fluoride, which can help protect young children against <a href="https://linkinghub.elsevier.com/retrieve/pii/S0002-8177(14)60225-7">tooth decay</a> and cavities. Sparkling or still water is always <a href="https://pubmed.ncbi.nlm.nih.gov/30354445/">better</a> than artificially sweetened flavoured drinks or juices. <h2>Isn’t soda water bad for my teeth and bones?</h2> There’s no evidence sparkling water damages your bones. While drinking a lot of soft drinks is linked to increased <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7071508/">fractures</a>, this is largely due to their association with higher rates of obesity. Sparkling water is more acidic than still water, and acidity can soften the teeth’s <a href="https://pubmed.ncbi.nlm.nih.gov/35635779/">enamel</a>. Usually this is not something to be too worried about, unless it is mixed with sugar or citrus, which has much higher levels of acidity and can harm teeth. However, if you grind your teeth often, the softening could enhance the <a href="https://www.betterhealth.vic.gov.au/health/conditionsandtreatments/teeth-grinding#risk-factors-for-tooth-grinding">damage it causes</a>. If you’re undertaking a home whitening process, sparkling water <a href="https://pubmed.ncbi.nlm.nih.gov/39123328/">might discolour</a> your teeth. In most other cases, it would take a lot of sparkling water to pass by the teeth, for a long period of time, to cause any noticeable damage. <h2>How does drinking water affect digestion?</h2> There is a <a href="https://www.mayoclinic.org/healthy-lifestyle/nutrition-and-healthy-eating/expert-answers/digestion/faq-20058348">misconception</a> drinking water (of any kind) with a meal is bad for digestion. While theoretically water could dilute stomach acid (which breaks down food), the practice of drinking it doesn’t appear <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11045127/">to have any negative effect</a>. Your digestive system simply adapts to the consistency of the meal. Some people do find that carbonated beverages cause some stomach upset. This is due to the build-up of <a href="https://www.sciencedirect.com/science/article/pii/S0939475309000787">gases</a>, which can cause bloating, cramping and discomfort. For people with an <a href="https://www.nature.com/articles/s41598-023-44916-8">overactive bladder</a>, the acidity might also aggravate the <a href="https://journals.physiology.org/doi/full/10.1152/ajpcell.00441.2022">urinary</a> system. Interestingly, the fizzy “<a href="https://pubmed.ncbi.nlm.nih.gov/34399552/">buzz</a>” you feel in your mouth from sparkling water fades the more you drink it. <h2>Is cold water harder to digest?</h2> You’ve chosen still or sparkling water. What about its temperature? There are surprisingly few studies about the effect of drinking cold water compared to room temperature. There is some evidence colder water (at two degrees Celsius) might inhibit <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7000532/">gastric contractions</a> and slow down digestion. Ice water may constrict blood vessels and cause <a href="https://www.sciencedirect.com/science/article/abs/pii/0306362383900642">cramping</a>. However other research suggests drinking cold water might temporarily boost <a href="https://academic.oup.com/jcem/article/88/12/6015/2661518">metabolism</a>, as the body needs to expend energy to warm it up to body temperature. This effect is minimal and unlikely to lead to significant <a href="https://academic.oup.com/jcem/article/91/9/3598/2656772">weight loss</a>. <h2>Which water wins?</h2> The bottom line is water is essential, hydrates us and has countless other <a href="https://news.com.au/lifestyle/health/diet/fewer-than-25-per-cent-simple-question-most-aussies-cant-answer/news-story/04693f23f03d9e8b6483cf34b47d9fcb">health benefits</a>. Water, with carbonated bubbles or without, will always be the healthiest drink to choose. And if you’re concerned about any impact to teeth enamel, one trick is to follow sparkling water with a glass of still. This helps rinse the teeth and return your mouth’s acidity back to normal.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/237125/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/christian-moro-121754">Christian Moro</a>, Associate Professor of Science & Medicine, <a href="https://theconversation.com/institutions/bond-university-863">Bond University</a> and <a href="https://theconversation.com/profiles/charlotte-phelps-1187658">Charlotte Phelps</a>, Senior Teaching Fellow, Medical Program, <a href="https://theconversation.com/institutions/bond-university-863">Bond University</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/is-still-water-better-for-you-than-sparkling-water-237125">original article</a>.

Food & Wine

Is white rice bad for me? Can I make it lower GI or healthier?

<a href="https://theconversation.com/profiles/emma-beckett-22673">Emma Beckett</a>, <a href="https://theconversation.com/institutions/unsw-sydney-1414">UNSW Sydney</a> Rice is a <a href="http://www.ipni.net/publication/bci.nsf/0/42A2EA40E95CBD1385257BBA006531E9/$FILE/Better%20Crops%20International%202002-3%20p03.pdf">culinary staple</a> in Australia and around the world. It might seem like a given that brown rice is healthier than white and official <a href="https://www.eatforhealth.gov.au/eating-well/healthy-recipes/recipe-modification-tips">public health resources</a> often recommend brown rice instead of white as a “healthy swap”. But <a href="https://pubmed.ncbi.nlm.nih.gov/34441728/">Australians definitely prefer white rice</a> over brown. So, what’s the difference, and what do we need to know when choosing rice? <h2>What makes rice white or brown?</h2> Rice “grains” are technically seeds. A complete, whole rice seed is called a “paddy”, which has <a href="https://www.fao.org/4/t0567e/t0567e07.htm">multiple parts</a>: <ol> <li>the “hull” is the hard outer layer which protects the seed</li> <li>the “bran”, which is a softer protective layer containing the seed coat</li> <li>the “germ” or the embryo, which is the part of the seed that would develop into a new plant if was germinated</li> <li>the “endosperm”, which makes up most of the seed and is essentially the store of nutrients that feeds the developing plant as a seed grows into a plant.</li> </ol> Rice needs to be <a href="https://www.tandfonline.com/doi/pdf/10.1080/87559128509540778">processed</a> for humans to eat it. Along with cleaning and drying, the hard hulls are removed since we can’t digest them. This is how <a href="https://ift.onlinelibrary.wiley.com/doi/abs/10.1111/1541-4337.12449">brown rice is made</a>, with the other three parts of the rice remaining intact. This means brown rice is regarded as a “wholegrain”. White rice, however, is a “refined” grain, as it is <a href="https://ift.onlinelibrary.wiley.com/doi/abs/10.1111/1541-4337.12449">further polished</a> to remove the bran and germ, leaving just the endosperm. This is a mechanical and not a chemical process. <h2>What’s the difference, nutritionally?</h2> Keeping the bran and the germ means <a href="https://onlinelibrary.wiley.com/doi/abs/10.1002/cche.10322">brown rice has more</a> magnesium, phosphorus, potassium B vitamins (niacin, folate, riboflavin and pyridoxine), iron, zinc and fibre. The germ and the bran also contain more bioactives (compounds in foods that aren’t essential nutrients but have health benefits), like <a href="https://www.mdpi.com/1420-3049/28/2/532#:%7E:text=Brown%20rice%20(BR)%20is%20obtained,and%20phenolic%20compounds%20%5B3%5D.">oryzanols and phenolic compounds</a> which have antioxidant effects. But that doesn’t mean white rice is just empty calories. It <a href="https://www.glnc.org.au/wp-content/uploads/2011/04/GLNC_Rice-factsheet_WEB.pdf">still contains</a> vitamins, minerals and some fibre, and is low in fat and salt, and is naturally gluten-free. White and brown rice actually have <a href="https://ift.onlinelibrary.wiley.com/doi/abs/10.1111/1541-4337.12449">similar</a> amounts of calories (or kilojoules) and total carbohydrates. There are studies that show eating more white rice is linked to <a href="https://diabetesjournals.org/care/article/43/11/2625/35820/A-Global-Perspective-on-White-Rice-Consumption-and">a higher risk</a> of type 2 diabetes. But it is difficult to know if this is down to the rice itself, or other related factors such as socioeconomic variables or other dietary patterns. <h2>What about the glycaemic index?</h2> The higher fibre means brown rice has a <a href="https://www.sciencedirect.com/science/article/pii/S0002916523314862">lower glycaemic index</a> (GI), meaning it raises blood sugar levels more slowly. But this is highly variable between different rices within the white and brown categories. The <a href="https://www.betterhealth.vic.gov.au/health/healthyliving/carbohydrates-and-the-glycaemic-index#:%7E:text=The%20glycaemic%20index%20(GI)%20is,simple'%20or%20'complex'.">GI system</a> uses low (less than 55), medium (55–70) and high (above 70) categories. <a href="https://glycemicindex.com/gi-search/?food_name=rice&product_category=&country=&gi=&gi_filter=&serving_size_(g)=&serving_size_(g)_filter=&carbs_per_serve_(g)=&carbs_per_serve_(g)_filter=&gl=&gl_filter=">Brown rices</a> fall into the low and medium categories. <a href="https://glycemicindex.com/gi-search/?food_name=rice&product_category=&country=&gi=&gi_filter=&serving_size_(g)=&serving_size_(g)_filter=&carbs_per_serve_(g)=&carbs_per_serve_(g)_filter=&gl=&gl_filter=">White rices</a> fall in the medium and high. There are specific <a href="https://www.gisymbol.com/low-gi-products/sunrice-doongara-low-gi-white-clever-rice-1kg/">low-GI types available</a> for both white and brown types. You can also lower the GI of rice by <a href="https://pubs.acs.org/doi/abs/10.1021/jf503203r">heating and then cooling it</a>. This process converts some of the “available carbohydrates” into “resistant starch”, which then functions like dietary fibre. <h2>Are there any benefits to white rice?</h2> The <a href="https://www.realsimple.com/brown-rice-vs-white-rice-8417468#:%7E:text=The%20eating%20experience%20between%20these,chewier%20texture%20and%20nuttier%20flavor.">taste and textural qualities</a> of white and brown rices differ. White rice tends to have a softer texture and more mild or neutral flavour. Brown rice has a chewier texture and nuttier flavour. So, while you can technically substitute brown rice into most recipes, the experience will be different. Or other ingredients may need to be added or changed to create the desired texture. Removing more of the outer layers may also reduce the levels of <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10375490/">contaminants</a> such as pesticides. <h2>We don’t just eat rice</h2> Comparing white and brown rice seems like an easy way to boost nutritional value. But just because one food (brown rice) is more nutrient-dense doesn’t make the other food (white rice) “bad”. Ultimately, it’s not often that we eat just rice, so we don’t need the rice we choose to be the perfect one. Rice is typically the staple base of a more complex dish. So, it’s probably more important to think about what we eat with rice. Adding vegetables and lean proteins to rice-based dishes can easily add the micronutrients, bioactives and fibre that white rice is comparatively lacking, and this can likely do more to contribute to diet quality than eating brown rice instead.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/236767/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/emma-beckett-22673">Emma Beckett</a>, Adjunct Senior Lecturer, Nutrition, Dietetics & Food Innovation - School of Health Sciences, <a href="https://theconversation.com/institutions/unsw-sydney-1414">UNSW Sydney</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/is-white-rice-bad-for-me-can-i-make-it-lower-gi-or-healthier-236767">original article</a>.

Food & Wine

4 ways to cut down on meat when dining out – and still make healthy choices

.<a href="https://theconversation.com/profiles/laura-marchese-1271636">Laura Marchese</a>, <a href="https://theconversation.com/institutions/deakin-university-757">Deakin University</a> and <a href="https://theconversation.com/profiles/katherine-livingstone-324808">Katherine Livingstone</a>, <a href="https://theconversation.com/institutions/deakin-university-757">Deakin University</a> Many of us are looking for ways to eat a healthier and more <a href="https://theconversation.com/how-sustainable-is-your-weekly-grocery-shop-these-small-changes-can-have-big-benefits-234367">sustainable diet</a>. And one way to do this is by reducing the amount of meat we eat. That doesn’t mean you need to become a <a href="https://theconversation.com/why-you-should-eat-a-plant-based-diet-but-that-doesnt-mean-being-a-vegetarian-78470">vegan or vegetarian</a>. Our <a href="https://jn.nutrition.org/article/S0022-3166(24)00333-X/fulltext">recent research</a> shows even small changes to cut down on meat consumption could help improve health and wellbeing. But not all plant-based options are created equal and some are <a href="https://pubmed.ncbi.nlm.nih.gov/30744710/">ultra-processed</a>. Navigating what’s available when eating out – including options like tofu and fake meats – can be a challenge. So what are your best options at a cafe or restaurant? Here are some guiding principles to keep in mind when cutting down on meat. <h2>Health benefits to cutting down</h2> Small amounts of lean meat can be part of a healthy, balanced diet. But the majority of Australians <a href="https://cancer.org.au/about-us/policy-and-advocacy/prevention/obesity/related-resources/meat-and-cancer#consumption">still eat more meat</a> than recommended. Only a small percentage of Australians (10%) are vegetarian or vegan. But an <a href="https://www.foodfrontier.org/wp-content/uploads/2019/10/Food-Frontier-Hungry-For-Plant-Based-Australian-Consumer-Insights.pdf">increasing</a> number opt for a <a href="https://theconversation.com/love-meat-too-much-to-be-vegetarian-go-flexitarian-73741">flexitarian</a> diet. <a href="https://theconversation.com/whats-the-difference-between-vegan-and-vegetarian-225275">Flexitarians</a> eat a diet rich in fruits and vegetables, while still enjoying small amounts of meat, dairy, eggs and fish. Our <a href="https://jn.nutrition.org/article/S0022-3166(24)00333-X/fulltext">recent research</a> looked at whether the average Australian diet would improve if we swapped meat and dairy for plant-based alternatives, and the results were promising. The study found health benefits when people halved the amount of meat and dairy they ate and replaced them with healthy plant-based foods, like tofu or <a href="https://www.heartfoundation.org.au/blog/why-you-need-legumes-in-your-life">legumes</a>. On average, their dietary fibre intake – which helps with feeling fuller for longer and digestive health – went up. Saturated fats – which increase our blood cholesterol levels, a risk factor for heart disease – went down. Including more fibre and less saturated fat helps reduce the risk of <a href="https://www.heartfoundation.org.au/healthy-living/healthy-eating/healthy-eating-to-protect-your-heart">heart disease</a>. Achieving these health benefits may be as simple as swapping ham for baked beans in a toastie for lunch, or substituting half of the mince in your bolognese for lentils at dinner. <h2>How it’s made matters</h2> For a long time we’ve known processed meats – such as ham, bacon and sausages – are bad for your health. Eating high amounts of these foods is associated with poor <a href="https://www.heartfoundation.org.au/healthy-living/healthy-eating/protein-and-heart-health">heart health</a> and some forms of <a href="https://cancer.org.au/cancer-information/causes-and-prevention/diet-and-exercise/meat-and-cancer-risk">cancer</a>. But the same can be true of many processed meat alternatives. Plant-based alternatives designed to mimic meat, such as sausages and burgers, have become readily available in supermarkets, cafes and restaurants. These products are ultra-processed and can be <a href="https://theconversation.com/we-looked-at-700-plant-based-foods-to-see-how-healthy-they-really-are-heres-what-we-found-222991">high in salt and saturated fat</a>. Our study found when people replaced meat and dairy with ultra-processed meat alternatives – such as plant-based burgers or sausages – they ate more salt and less calcium, compared to eating meat or healthy plant-based options. So if you’re cutting down on meat for health reasons, it’s important to think about what you’re replacing it with. The <a href="https://www.eatforhealth.gov.au/sites/default/files/2022-09/n55g_adult_brochure.pdf">Australian Dietary Guidelines</a> recommend eggs, legumes/beans, tofu, nuts and seeds. Tofu can be a great option. But we recommend flavouring plain tofu with herbs and spices yourself, as pre-marinated products are often ultra-processed and can be high in salt. <h2>What about when dining out?</h2> When you’re making your own food, it’s easier to adapt recipes or reduce the amount of meat. But when faced with a menu, it can be difficult to work out what is the best option. Here are our four ways to make healthy choices when you eat out: 1. Fill half your plate with vegetables When cutting down on meat, aim for half your plate to be vegetables. Try to also eat <a href="https://theconversation.com/were-told-to-eat-a-rainbow-of-fruit-and-vegetables-heres-what-each-colour-does-in-our-body-191337">a variety of colours</a>, such as leafy green spinach, red capsicum and pumpkin. When you’re out, this might look like choosing a vegetable-based entree, a stir-fry or ordering a side salad to have with your meal. 2. Avoid the deep fryer The Australian Dietary Guidelines <a href="https://www.eatforhealth.gov.au/sites/default/files/files/the_guidelines/n55a_australian_dietary_guidelines_summary_130530.pdf">recommend limiting</a> deep fried foods to once a week or less. When dining out, choose plant-based options that are sautéed, grilled, baked, steamed, boiled or poached – instead of those that are crumbed or battered before deep frying. This could mean choosing vegetarian dumplings that are steamed not fried, or poached eggs at brunch instead of fried. Ordering a side of roast vegetables instead of hot chips is also a great option. 3. Pick wholegrains Scan the menu for wholegrain options such as brown rice, wholemeal pizza or pasta, barley, quinoa or wholemeal burger buns. Not only are they good sources of protein, but they also provide more <a href="https://www.eatforhealth.gov.au/food-essentials/five-food-groups/grain-cereal-foods-mostly-wholegrain-and-or-high-cereal-fibre">dietary fibre</a> than refined grains, which help keep you fuller for longer. 4. If you do pick meat – choose less processed kinds You may not always want, or be able, to make a vegetarian choice when eating out and with other people. If you do opt for meat, it’s better to steer clear of processed options like bacon or sausages. If sharing dishes with other people, you could try adding unprocessed plant-based options into the mix. For example, a curry with lentils or chickpeas, or a vegetable-based pizza instead of one with ham or salami. If that’s not an option, try choose meat that’s a lean cut, such as chicken breast, or options which are grilled rather than fried.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/236505/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/laura-marchese-1271636">Laura Marchese</a>, PhD candidate at the Institute for Physical Activity and Nutrition, <a href="https://theconversation.com/institutions/deakin-university-757">Deakin University</a> and <a href="https://theconversation.com/profiles/katherine-livingstone-324808">Katherine Livingstone</a>, NHMRC Emerging Leadership Fellow and Senior Research Fellow at the Institute for Physical Activity and Nutrition, <a href="https://theconversation.com/institutions/deakin-university-757">Deakin University</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/4-ways-to-cut-down-on-meat-when-dining-out-and-still-make-healthy-choices-236505">original article</a>.

Food & Wine

5 foods to add to your shopping list to save money – and they’re good for you too

<a href="https://theconversation.com/profiles/clare-collins-7316">Clare Collins</a>, <a href="https://theconversation.com/institutions/university-of-newcastle-1060">University of Newcastle</a> Food prices are <a href="https://www.abc.net.au/news/2024-06-13/anglicare-cost-living-unemployment-groceries-fuel-rent-prices/103972166?utm_medium=social&utm_content=sf273549397&utm_campaign=abc&utm_source=linkedin.com&sf273549397=1">adding pressure on household budgets</a>, especially for Australians on the lowest incomes. To help save money on the weekly groceries, consider adding these five staples to your shopping trolley: eggs, oats, carrots, UHT milk and apples. These foods rate highly on the <a href="https://pubmed.ncbi.nlm.nih.gov/20181811/">nutrient-rich foods index</a> and on cost, meaning they represent good value for money when it comes to buying nutritious food. Loading up on these items helps push more expensive, less nutritious foods out of your trolley. Keeping a supply at your place will also save extra trips to the shops, which saves petrol and time. <h2>1. Eggs</h2> Eggs are extremely good value at around A$6 a dozen (50 cents an egg). Meat, chicken and fish prices vary from $12 a kilo for mince, $12–$20 a kilo for chicken, to $20–$50 a kilo for steak and fish depending on cut or type. Selecting the cheapest cuts still costs $2–$3 a serve, compared to two eggs at a $1 serve. When you swap a red meat meal for an eggy dish, this can add up to a big saving. Try our egg recipes on the <a href="https://nomoneynotime.com.au/healthy-easy-recipes/filter/meals--dinner,lunch/superfoods--eggs">No Money No Time website</a>, from <a href="https://nomoneynotime.com.au/healthy-easy-recipes/sweetcorn-and-zucchini-fritters">fritters</a>, to <a href="https://nomoneynotime.com.au/healthy-easy-recipes/mushroom-omelette">omelettes</a>, or <a href="https://nomoneynotime.com.au/healthy-easy-recipes/clares-rainbow-rice">fried rice</a>. These recipes also help use up other items you have in the pantry, fridge and veggie crisper. Eggs are a good <a href="https://www.australianeggs.org.au/nutrition/nutrients-and-vitamins">source</a> of protein and also contain choline, lutein and zeaxanthin, vitamins A, B2, B12, D, E and folate, and minerals iron, zinc, iodine and selenium. For people concerned about eggs raising cholesterol, a <a href="https://pubmed.ncbi.nlm.nih.gov/38370115/">recent review of research evidence</a> concluded there wasn’t likely to be any adverse effect on overall disease risk when consuming up to one egg a day. <h2>2. Rolled oats</h2> Rolled oats vary a lot in price from about $2 a kilogram for “own brand”, up to $9 for premium varieties. Oats are really <a href="https://nomoneynotime.com.au/healthy-easy-recipes/filter/keywords--Oats">versatile</a>. For breakfast you can make <a href="https://nomoneynotime.com.au/healthy-easy-recipes/microwave-porridge">porridge</a>, <a href="https://nomoneynotime.com.au/healthy-easy-recipes/easy-overnight-oats">overnight oats,</a> DIY muesli or <a href="https://nomoneynotime.com.au/healthy-easy-recipes/gingerbread-granola">granola</a>. Oats make a pastry substitute for a <a href="https://nomoneynotime.com.au/healthy-easy-recipes/clares-rolled-oats-quiche">quick and easy quiche base</a>. Or blitz them in a food processor and use as a breadcrumb substitute. For dessert, you can use them to top a comforting <a href="https://nomoneynotime.com.au/healthy-easy-recipes/wholegrain-apple-crumble">apple crumble</a>. <a href="https://www.glnc.org.au/resource/oats-2/">Oats are a wholegrain</a>, meaning they retain every part of the original grain – the germ, bran and outer layers – and hence more fibre and nutrients. Oats are a rich in beta-glucan, a soluble fibre that <a href="https://pubmed.ncbi.nlm.nih.gov/34236436/">helps lower blood cholesterol levels</a> by binding with bile acids in the gut, meaning they can’t be converted into LDL (bad) cholesterol. They <a href="https://www.glnc.org.au/resource/oats-2/">also contain</a> B vitamins of thiamin (b1), riboflavin (B2), niacin (B3), pyridoxine (B6), pantothenic acid (B5) and folate (B9), as well as vitamin E and the minerals iron, zinc, magnesium, phosphorus and potassium. <h2>3. Carrots</h2> It’s hard to get better value than a bag of carrots at about $2.50 a kilo. They last for ages in the fridge and can be eaten raw, as carrot sticks or with <a href="https://nomoneynotime.com.au/healthy-easy-recipes/moroccan-carrot-dip">carrot dip</a>, or baked to make carrot veggie “<a href="https://nomoneynotime.com.au/healthy-easy-recipes/vegetable-chips">chips</a>”. Try grating carrot as an extra on a salad roll or <a href="https://nomoneynotime.com.au/healthy-easy-recipes/basic-beef-burgers">burger</a>, or mixed into grated cheese to extend it when topping tacos, pasta or pizza, or even a dish like <a href="https://nomoneynotime.com.au/healthy-easy-recipes/carrot-and-cauliflower-macaroni-cheese">mac and cheese</a>. Other versatile uses include soup, <a href="https://nomoneynotime.com.au/healthy-easy-recipes/carrot-puree">carrot mash</a>, <a href="https://nomoneynotime.com.au/healthy-easy-recipes/baked-carrots-with-honey-thyme">roasted carrots</a> or, for something sweet, carrot muffins or <a href="https://nomoneynotime.com.au/healthy-easy-recipes/easy-carrot-cake-bliss-balls">bliss balls</a>. Carrots are rich in the carotenoids <a href="https://ods.od.nih.gov/factsheets/VitaminA-HealthProfessional/">alpha-carotene and beta-carotene</a>, which get converted into vitamin A in the body and used in antibody production and to maintain <a href="https://ods.od.nih.gov/factsheets/VitaminA-Consumer/">healthy functioning</a> of your eyes, skin, lungs and gut. <h2>4. Longlife skim milk</h2> Longlife skim milk costs about $1.60 a litre. While some fresh varieties are around the same price, the value of longlife milk is that you can keep a store of it in the cupboard, meaning you never run out and it has a long shelf life. Milk makes great <a href="https://nomoneynotime.com.au/healthy-easy-recipes/banana-breakfast-smoothie">smoothies</a> and is an essential ingredient in dishes from quiche to <a href="https://nomoneynotime.com.au/healthy-easy-recipes/cauliflower-cheese-bake">cauliflower cheese</a> to <a href="https://nomoneynotime.com.au/healthy-easy-recipes/clares-lemon-orange-delicious">lemon delicious</a> pudding. <a href="https://www.betterhealth.vic.gov.au/health/healthyliving/milk#nutrients-in-milk">Milk contains</a> protein, calcium, magnesium, zinc, potassium and vitamins A, B2 and B12. Research shows regular milk consumption is <a href="https://www.betterhealth.vic.gov.au/health/healthyliving/milk#milk-and-health-conditions">associated with</a> a lower risk of developing osteoporosis, high blood pressure, type 2 diabetes, heart disease and colon cancer. <h2>5. Apples</h2> A bag of apples costs about $4 or 60 cents an apple and $4–$5 for a large can of stewed apple. Apples make a portable snack. Add <a href="https://nomoneynotime.com.au/healthy-easy-recipes/comforting-apple-porridge">them to porridge</a>, serve <a href="https://nomoneynotime.com.au/healthy-easy-recipes/pork-loin-rolls">with pork</a>, <a href="https://nomoneynotime.com.au/healthy-easy-recipes/carrot-and-apple-coleslaw-with-mustard-vinaigrette">in coleslaw</a> or in <a href="https://nomoneynotime.com.au/healthy-easy-recipes/wholegrain-apple-crumble">apple crumble</a>. Apples <a href="https://pubmed.ncbi.nlm.nih.gov/35502671/">contain</a> dietary fibre and pectin, vitamin B6 and C, and the minerals potassium, calcium, nitrogen, magnesium and traces of zinc, iron and copper. In <a href="https://pubmed.ncbi.nlm.nih.gov/31667463/">observational studies</a>, people who ate more apples had a lower risk of heart disease, stroke, type 2 diabetes and death from any cause. For easy, tasty, economical meals that are quick to prepare, without too much effort, along with our food budget tips, visit our team’s <a href="https://nomoneynotime.com.au/">No Money No Time</a> website.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/229903/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/clare-collins-7316">Clare Collins</a>, Laureate Professor in Nutrition and Dietetics, <a href="https://theconversation.com/institutions/university-of-newcastle-1060">University of Newcastle</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/5-foods-to-add-to-your-shopping-list-to-save-money-and-theyre-good-for-you-too-229903">original article</a>.

Food & Wine

Cheeky diet soft drink getting you through the work day? Here’s what that may mean for your health

<a href="https://theconversation.com/profiles/lauren-ball-14718">Lauren Ball</a>, <a href="https://theconversation.com/institutions/the-university-of-queensland-805">The University of Queensland</a> and <a href="https://theconversation.com/profiles/emily-burch-438717">Emily Burch</a>, <a href="https://theconversation.com/institutions/southern-cross-university-1160">Southern Cross University</a> Many people are <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7230225/">drinking less</a> sugary soft drink than in the past. This is a great win for public health, given the <a href="https://jamanetwork.com/journals/jamainternalmedicine/fullarticle/2749350">recognised risks</a> of diets high in sugar-sweetened drinks. But over time, intake of diet soft drinks has <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7230225/">grown</a>. In fact, it’s so high that these products are now regularly <a href="https://www.sciencedirect.com/science/article/pii/S0160412020319188">detected in wastewater</a>. So what does the research say about how your health is affected in the long term if you drink them often? <h2>What makes diet soft drinks sweet?</h2> The World Health Organization (WHO) <a href="https://www.who.int/news/item/04-03-2015-who-calls-on-countries-to-reduce-sugars-intake-among-adults-and-children">advises</a> people “reduce their daily intake of free sugars to less than 10% of their total energy intake. A further reduction to below 5% or roughly 25 grams (six teaspoons) per day would provide additional health benefits.” But most regular soft drinks contain <a href="https://www.actiononsugar.org/surveys/2014/sugar-sweetened-beverages/">a lot of sugar</a>. A regular 335 millilitre can of original Coca-Cola contains at least <a href="https://www.coca-cola.com/ng/en/about-us/faq/how-much-sugar-is-in-cocacola-original-taste">seven</a> teaspoons of added sugar. Diet soft drinks are designed to taste similar to regular soft drinks but without the sugar. Instead of sugar, diet soft drinks contain artificial or natural sweeteners. The artificial sweeteners include aspartame, saccharin and sucralose. The natural sweeteners include stevia and monk fruit extract, which come from plant sources. Many artificial sweeteners are much sweeter than sugar so less is needed to provide the same burst of sweetness. Diet soft drinks are marketed as healthier alternatives to regular soft drinks, particularly for people who want to reduce their sugar intake or manage their weight. But while surveys of Australian <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7551593/">adults</a> and <a href="https://www.cambridge.org/core/journals/public-health-nutrition/article/adolescents-knowledge-and-beliefs-regarding-health-risks-of-soda-and-diet-soda-consumption/32F3E0FD6727F18F04C63F0390595131">adolescents</a> show most people understand the benefits of reducing their sugar intake, they often aren’t as aware about how diet drinks may affect health more broadly. <h2>What does the research say about aspartame?</h2> The artificial sweeteners in soft drinks are considered safe for consumption by food authorities, including in the <a href="https://www.fda.gov/food/food-additives-petitions/aspartame-and-other-sweeteners-food">US</a> and <a href="https://www.foodstandards.gov.au/consumer/additives/aspartame">Australia</a>. However, some <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4899993/">researchers</a> have raised concern about the long-term risks of consumption. People who drink diet soft drinks regularly and often are <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4446768/">more likely</a> to develop certain metabolic conditions (such as diabetes and heart disease) than those who don’t drink diet soft drinks. The link was found even after accounting for other dietary and lifestyle factors (such as physical activity). In 2023, the WHO announced reports had found aspartame – the main sweetener used in diet soft drinks – was “<a href="https://www.who.int/news/item/14-07-2023-aspartame-hazard-and-risk-assessment-results-released">possibly carcinogenic to humans</a>” (carcinogenic means cancer-causing). Importantly though, the report noted there is not enough current scientific evidence to be truly confident aspartame may increase the risk of cancer and emphasised it’s safe to consume occasionally. <h2>Will diet soft drinks help manage weight?</h2> Despite the word “diet” in the name, diet soft drinks are not strongly linked with weight management. In 2022, the WHO conducted a <a href="https://www.who.int/news/item/15-05-2023-who-advises-not-to-use-non-sugar-sweeteners-for-weight-control-in-newly-released-guideline">systematic review</a> (where researchers look at all available evidence on a topic) on whether the use of artificial sweeteners is beneficial for weight management. Overall, the randomised controlled trials they looked at suggested slightly more weight loss in people who used artificial sweeteners. But the observational studies (where no intervention occurs and participants are monitored over time) found people who consume high amounts of artificial sweeteners tended to have an increased risk of higher body mass index and a 76% increased likelihood of having obesity. In other words, artificial sweeteners may not directly help manage weight over the long term. This resulted in the WHO <a href="https://www.who.int/news/item/15-05-2023-who-advises-not-to-use-non-sugar-sweeteners-for-weight-control-in-newly-released-guideline">advising</a> artificial sweeteners should not be used to manage weight. <a href="http://www.cell.com/cell-metabolism/fulltext/S1550-4131(16)30296-0">Studies</a> in animals have suggested consuming high levels of artificial sweeteners can signal to the brain it is being starved of fuel, which can lead to more eating. However, the evidence for this happening in humans is still unproven. <h2>What about inflammation and dental issues?</h2> There is <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10817473/">some early evidence</a> artificial sweeteners may irritate the lining of the digestive system, causing inflammation and increasing the likelihood of diarrhoea, constipation, bloating and other symptoms often associated with irritable bowel syndrome. However, this study noted more research is needed. High amounts of diet soft drinks have <a href="https://bmcpublichealth.biomedcentral.com/articles/10.1186/s12889-023-17223-0">also been</a> linked with liver disease, which is based on inflammation. The consumption of diet soft drinks is also <a href="https://link.springer.com/article/10.1007/s40368-019-00458-0#:%7E:text=Diet%20soft%20drinks%20often%20have,2006">associated</a> with dental erosion. Many soft drinks contain phosphoric and citric acid, which can damage your tooth enamel and contribute to dental erosion. <h2>Moderation is key</h2> As with many aspects of nutrition, moderation is key with diet soft drinks. Drinking diet soft drinks occasionally is unlikely to harm your health, but frequent or excessive intake may increase health risks in the longer term. Plain water, infused water, sparkling water, herbal teas or milks remain the best options for hydration.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/233438/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/lauren-ball-14718">Lauren Ball</a>, Professor of Community Health and Wellbeing, <a href="https://theconversation.com/institutions/the-university-of-queensland-805">The University of Queensland</a> and <a href="https://theconversation.com/profiles/emily-burch-438717">Emily Burch</a>, Accredited Practising Dietitian and Lecturer, <a href="https://theconversation.com/institutions/southern-cross-university-1160">Southern Cross University</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/cheeky-diet-soft-drink-getting-you-through-the-work-day-heres-what-that-may-mean-for-your-health-233438">original article</a>.

Food & Wine

How sustainable is your weekly grocery shop? These small changes can have big benefits

<div class="theconversation-article-body"><a href="https://theconversation.com/profiles/michalis-hadjikakou-129930">Michalis Hadjikakou</a>, <a href="https://theconversation.com/institutions/deakin-university-757">Deakin University</a>; <a href="https://theconversation.com/profiles/carla-archibald-283811">Carla Archibald</a>, <a href="https://theconversation.com/institutions/deakin-university-757">Deakin University</a>; <a href="https://theconversation.com/profiles/ozge-geyik-1402545">Özge Geyik</a>, <a href="https://theconversation.com/institutions/deakin-university-757">Deakin University</a>, and <a href="https://theconversation.com/profiles/pankti-shah-1547393">Pankti Shah</a>, <a href="https://theconversation.com/institutions/deakin-university-757">Deakin University</a> You might think eating more sustainably requires drastic changes, such as shifting to a <a href="https://theconversation.com/vegan-diet-has-just-30-of-the-environmental-impact-of-a-high-meat-diet-major-study-finds-210152">vegan diet</a>. While a plant-based diet is <a href="https://www.nature.com/articles/s43016-023-00795-w">undeniably</a> good for the Earth, our <a href="https://www.sciencedirect.com/science/article/pii/S2352550924001945#f0025">new research</a> shows modest changes to your eating habits can also have significant environmental benefits. We assessed how food products on Australian supermarket shelves stack up against key environmental indicators, such as carbon emissions and water use. We found swapping the most environmentally harmful foods for more sustainable options within the same food group, such as switching from beef burgers to chicken burgers, can significantly reduce carbon emissions – by up to 96% in some instances. The last thing we want to do is take the pleasure away from eating. Instead, we want to help consumers make realistic dietary changes that also help ensure a sustainable future. So read on to find out which simple food swaps can best achieve this. <h2>Informing sustainable diets</h2> The environmental impact of foods can be estimated using an approach known as a <a href="https://www.cell.com/one-earth/fulltext/S2590-3322(19)30128-9#:%7E:text=In%20this%20Primer%2C%20we%20introduce,cycle%20of%20a%20product%20system.">life-cycle assessment</a>. This involves identifying the “inputs” required along the food supply chain, such as fertiliser, energy, water and land, and tracking them from farm to fork. From this we can calculate a product’s “footprint” – or environmental impact per kilogram of product – and compare it to other foods. Most studies of environmental footprints focus on the raw ingredients that make up food products (such as beef, wheat or rice) rather than the packaged products people see on shelves (such as beef sausages, pasta or rice crackers). Of the studies that do focus on packaged foods, most only consider a fraction of the products available to consumers. What’s more, a lot of research considers only the carbon emissions of food products, excluding other important measures such as water use. And some studies use global average environmental footprints, which <a href="https://www.science.org/doi/10.1126/science.aaq0216">vary significantly</a> between countries. Our research set out to overcome these limitations. We aligned environmental footprints with the products people find on supermarket shelves, and covered a huge range of food and beverage products available in Australia. We also included many environmental indicators, to allow a <a href="https://www.pnas.org/doi/full/10.1073/pnas.2120584119">more complete picture</a> of the sustainability of different foods. <h2>What we did</h2> Key to our research was the <a href="https://www.georgeinstitute.org.au/projects/foodswitch">FoodSwitch database</a>, which compiles food labelling and ingredient data from images of packaged food and beverages. It covers more than 90% of the Australian packaged food market. We combined the database with a <a href="https://www.sciencedirect.com/science/article/pii/S0959652623029748">mathematical method</a> that sums the environmental impact of ingredients, to quantify the footprint of the product as a whole. From this, we estimated the environmental footprint of 63,926 food products available in Australian supermarkets. We then simulated the potential benefits of making “realistic” switches between products – that is, switches within the same food category. <h2>Our findings</h2> The results show how making a small dietary change can have big environmental consequences. For a shopping basket composed of items from eight food groups, we simulate the benefits of swapping from high-impact towards medium- or low-impact food products. Our analysis assumes a starting point from the most environmentally harmful products in each food group – for example, sweet biscuits, cheese and beef burger patties. A shift to the medium-impact foods for all eight items – such as a muffin, yoghurt and sliced meat – can lead to at least a 62% reduction in environmental impact. Shifts towards the most sustainable choice for all items – bread, soy milk or raw poultry – can achieve a minimum 77% reduction. This analysis ends at the supermarket shelves and does not include additional food processing by the consumer. For example, raw meat will usually be cooked before human consumption, which will expand its environmental footprint to varying degrees, <a href="https://www.nature.com/articles/s43016-020-00200-w">depending on the method used</a>. See the below info-graphic for more detail. The full results are available in <a href="https://www.sciencedirect.com/science/article/pii/S2352550924001945">our study</a>. <hr /> <iframe id="sR5yB" class="tc-infographic-datawrapper" style="border: 0;" src="https://datawrapper.dwcdn.net/sR5yB/" width="100%" height="400px" frameborder="0" scrolling="no"></iframe> <hr /> <h2>What next?</h2> Many people are looking for ways to live more sustainably. Insufficient or complex information can fuel confusion and anxiety in consumers, <a href="https://theconversation.com/reducing-eco-anxiety-is-a-critical-step-in-achieving-any-climate-action-210327">leading to inaction or paralysis</a>. Consumers need more information and support to choose more sustainable foods. Supermarkets and retailers also have an important role to play – for example, by giving sustainable products <a href="https://journals.sagepub.com/doi/10.1177/07439156211008898">prominent shelf placement</a>. Attractive pricing is also crucial – particularly in the midst of a <a href="https://theconversation.com/au/topics/cost-of-living-crisis-115238">cost-of-living crisis</a> when it can be difficult to prioritise sustainability over cost. Government interventions, such as information campaigns and <a href="https://journals.sagepub.com/doi/10.1177/07439156211008898">taxing high-impact products</a>, can also help. Food labelling is also important. The European Union <a href="https://environment.ec.europa.eu/topics/circular-economy/eu-ecolabel/product-groups-and-criteria_en">is leading the way</a> with measures such as the <a href="https://docs.score-environnemental.com/v/en">eco-score</a>, which integrates 14 environmental indicators into a single score from A to E. Apps such as <a href="https://www.georgeinstitute.org/projects/ecoswitch">ecoSwitch</a> can also <a href="https://www.sciencedirect.com/science/article/pii/S1326020024000268?via%3Dihub">empower consumers</a>. The diets of people in developed nations such as Australia <a href="https://theconversation.com/sustainable-shopping-want-to-eat-healthy-try-an-eco-friendly-diet-89086">exert a high toll on our planet</a>. More sustainable food choices are vital to achieving a <a href="https://www.thelancet.com/commissions/EAT">sustainable future for humanity</a>. We hope our research helps kick-start positive change.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/234367/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/michalis-hadjikakou-129930">Michalis Hadjikakou</a>, Senior Lecturer in Environmental Sustainability, School of Life and Environmental Sciences, Faculty of Science, Engineering & Built Environment, <a href="https://theconversation.com/institutions/deakin-university-757">Deakin University</a>; <a href="https://theconversation.com/profiles/carla-archibald-283811">Carla Archibald</a>, Research Fellow, Conservation Science, <a href="https://theconversation.com/institutions/deakin-university-757">Deakin University</a>; <a href="https://theconversation.com/profiles/ozge-geyik-1402545">Özge Geyik</a>, Visitor, School of Life and Environmental Sciences, <a href="https://theconversation.com/institutions/deakin-university-757">Deakin University</a>, and <a href="https://theconversation.com/profiles/pankti-shah-1547393">Pankti Shah</a>, PhD student, <a href="https://theconversation.com/institutions/deakin-university-757">Deakin University</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/how-sustainable-is-your-weekly-grocery-shop-these-small-changes-can-have-big-benefits-234367">original article</a>. </div>

Food & Wine

Tastes from our past can spark memories, trigger pain or boost wellbeing. Here’s how to embrace food nostalgia

<a href="https://theconversation.com/profiles/megan-lee-490875">Megan Lee</a>, <a href="https://theconversation.com/institutions/bond-university-863">Bond University</a>; <a href="https://theconversation.com/profiles/doug-angus-1542552">Doug Angus</a>, <a href="https://theconversation.com/institutions/bond-university-863">Bond University</a>, and <a href="https://theconversation.com/profiles/kate-simpson-1542551">Kate Simpson</a>, <a href="https://theconversation.com/institutions/bond-university-863">Bond University</a> Have you ever tried to bring back fond memories by eating or drinking something unique to that time and place? It could be a Pina Colada that recalls an island holiday? Or a steaming bowl of pho just like the one you had in Vietnam? Perhaps eating a favourite dish reminds you of a lost loved one – like the sticky date pudding Nanna used to make? If you have, you have tapped into <a href="https://www.tandfonline.com/doi/full/10.1080/02699931.2022.2142525">food-evoked nostalgia</a>. As researchers, we are exploring how eating and drinking certain things from your past may be important for your mood and mental health. <h2>Bittersweet longing</h2> First named in 1688 by Swiss medical student, <a href="https://www.jstor.org/stable/44437799">Johannes Hoffer</a>, <a href="https://compass.onlinelibrary.wiley.com/doi/10.1111/spc3.12070">nostalgia</a> is that bittersweet, sentimental longing for the past. It is experienced <a href="https://journals.sagepub.com/doi/10.1111/j.1467-8721.2008.00595.x">universally</a> across different cultures and lifespans from childhood into older age. But nostalgia does not just involve positive or happy memories – we can also experience nostalgia for <a href="https://psycnet.apa.org/doiLanding?doi=10.1037%2F0022-3514.91.5.975">sad and unhappy moments</a> in our lives. In the <a href="https://psycnet.apa.org/doiLanding?doi=10.1037%2Femo0000817">short and long term</a>, nostalgia can positively impact our health by improving <a href="https://psycnet.apa.org/doiLanding?doi=10.1037%2Fa0025167">mood</a> and <a href="https://psycnet.apa.org/doiLanding?doi=10.1037%2Femo0000817">wellbeing</a>, fostering <a href="https://psycnet.apa.org/doiLanding?doi=10.1037%2Fa0017597">social connection</a> and increasing quality of life. It can also trigger feelings of <a href="https://psycnet.apa.org/doiLanding?doi=10.1037%2Femo0000817">loneliness or meaninglessness</a>. We can use nostalgia to <a href="https://psycnet.apa.org/doiLanding?doi=10.1037%2Fa0025167">turn around a negative mood</a> or enhance our sense of <a href="https://psycnet.apa.org/doiLanding?doi=10.1037%2Femo0000817">self, meaning and positivity</a>. Research suggests nostalgia alters activity in the <a href="https://academic.oup.com/scan/article/17/12/1131/6585517">brain regions associated with reward processing</a> – the same areas involved when we seek and receive things we like. This could explain the <a href="https://www.sciencedirect.com/science/article/abs/pii/S2352250X22002445?via%3Dihub">positive feelings</a> it can bring. Nostalgia can also increase feelings of loneliness and sadness, particularly if the memories highlight dissatisfaction, grieving, loss, or wistful feelings for the past. This is likely due to activation of <a href="https://www.sciencedirect.com/science/article/pii/S2352250X22002445?casa_token=V31ORDWcsx4AAAAA:Vef9hiwUz9506f5PYGsXH-JxCcnsptQnVPNaAGares2xTU5JbKSHakwGpLxSRO2dNckrdFGubA">brain areas</a> such as the amygdala, responsible for processing emotions and the prefrontal cortex that helps us integrate feelings and memories and regulate emotion. <h2>How to get back there</h2> There are several ways we can <a href="https://psycnet.apa.org/fulltext/2006-20034-013.html">trigger</a> or tap into nostalgia. Conversations with family and friends who have shared experiences, unique objects like photos, and smells can <a href="https://www.sciencedirect.com/science/article/abs/pii/S2352250X23000076">transport us back</a> to old times or places. So can a favourite song or old TV show, reunions with former classmates, even social media <a href="https://www.theverge.com/2015/3/24/8284703/facebook-on-this-day-nostalgia-recap">posts and anniversaries</a>. What we eat and drink can trigger <a href="https://www.emerald.com/insight/content/doi/10.1108/QMR-06-2012-0027/full/html">food-evoked nostalgia</a>. For instance, when we think of something as “<a href="https://theconversation.com/health-check-why-do-we-crave-comfort-food-in-winter-118776">comfort food</a>”, there are likely elements of nostalgia at play. Foods you found comforting as a child can evoke memories of being cared for and nurtured by loved ones. The form of these foods and the stories we tell about them may have been handed down through generations. Food-evoked nostalgia can be very powerful because it engages multiple senses: taste, smell, texture, sight and sound. The sense of <a href="https://www.tandfonline.com/doi/full/10.1080/09658211.2013.876048?casa_token=wqShWbRXJaYAAAAA%3AqJabgHtEbPtEQp7qHnl7wOb527bpGxzIJ_JwQX8eAyq1IrM_HQFIng8ELAMyuoFoeZyiX1zeJTPf">smell</a> is closely linked to the limbic system in the brain responsible for emotion and memory making food-related memories particularly vivid and emotionally charged. But, food-evoked nostalgia can also give rise to <a href="https://onlinelibrary.wiley.com/doi/full/10.1002/hpja.873">negative memories</a>, such as of being forced to eat a certain vegetable you disliked as a child, or a food eaten during a sad moment like a loved ones funeral. Understanding why these foods <a href="https://www.tandfonline.com/doi/full/10.1080/02699931.2022.2142525?casa_token=16kAPHUQTukAAAAA%3A9IDvre8yUT8UsuiR_ltsG-3qgE2sdkIFgcrdH3T5EYbVEP9JZwPcsbmsPLT6Kch5EFFs9RPsMTNn">evoke negative memories</a> could help us process and overcome some of our adult food aversions. Encountering these foods in a positive light may help us reframe the memory associated with them. <h2>What people told us about food and nostalgia</h2> Recently <a href="https://onlinelibrary.wiley.com/doi/full/10.1002/hpja.873">we interviewed eight Australians</a> and asked them about their experiences with food-evoked nostalgia and the influence on their mood. We wanted to find out whether they experienced food-evoked nostalgia and if so, what foods triggered pleasant and unpleasant memories and feelings for them. They reported they could use foods that were linked to times in their past to manipulate and influence their mood. Common foods they described as particularly nostalgia triggering were homemade meals, foods from school camp, cultural and ethnic foods, childhood favourites, comfort foods, special treats and snacks they were allowed as children, and holiday or celebration foods. One participant commented: <blockquote> I guess part of this nostalgia is maybe […] The healing qualities that food has in mental wellbeing. I think food heals for us. </blockquote> Another explained <blockquote> I feel really happy, and I guess fortunate to have these kinds of foods that I can turn to, and they have these memories, and I love the feeling of nostalgia and reminiscing and things that remind me of good times. </blockquote> Understanding food-evoked nostalgia is valuable because it provides us with an insight into how our sensory experiences and emotions intertwine with our memories and identity. While we know a lot about how food triggers nostalgic memories, there is still much to learn about the specific brain areas involved and the differences in food-evoked nostalgia in different cultures. In the future we may be able to use the science behind food-evoked nostalgia to help people experiencing dementia to tap into lost memories or in psychological therapy to help people reframe negative experiences. So, if you are ever feeling a little down and want to improve your mood, consider turning to one of your favourite comfort foods that remind you of home, your loved ones or a holiday long ago. Transporting yourself back to those times could help turn things around.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/232826/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/megan-lee-490875">Megan Lee</a>, Senior Teaching Fellow, Psychology, <a href="https://theconversation.com/institutions/bond-university-863">Bond University</a>; <a href="https://theconversation.com/profiles/doug-angus-1542552">Doug Angus</a>, Assistant Professor of Psychology, <a href="https://theconversation.com/institutions/bond-university-863">Bond University</a>, and <a href="https://theconversation.com/profiles/kate-simpson-1542551">Kate Simpson</a>, Sessional academic, <a href="https://theconversation.com/institutions/bond-university-863">Bond University</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/tastes-from-our-past-can-spark-memories-trigger-pain-or-boost-wellbeing-heres-how-to-embrace-food-nostalgia-232826">original article</a>.

Mind

We know what to eat to stay healthy. So why is it so hard to make the right choices?

<a href="https://theconversation.com/profiles/nina-van-dyke-822557">Nina Van Dyke</a>, <a href="https://theconversation.com/institutions/victoria-university-1175">Victoria University</a> A healthy diet <a href="https://www.who.int/initiatives/behealthy/healthy-diet">protects us</a> against a number of chronic diseases, including heart disease, diabetes and cancer. From early childhood, we receive an abundance of <a href="https://cdn.who.int/media/docs/default-source/healthy-diet/healthy-diet-fact-sheet-394.pdf?sfvrsn=69f1f9a1_2&download=true">information</a> about how we <a href="https://www.eatforhealth.gov.au/guidelines/australian-guide-healthy-eating">should eat</a> to be healthy and reduce our risk of disease. And most people have a <a href="https://link.springer.com/content/pdf/10.1186/1479-5868-11-63.pdf">broad understanding</a> of what healthy eating looks like. But this knowledge <a href="https://www.sciencedirect.com/science/article/pii/S0001209216310584?casa_token=6CZgCmT1RMgAAAAA:sSRsj2o6swVfvoBxMIVrMTxqdczSAiFwfTCYzYQ8U3z4ey_WLQ6knpmk8WRH77zugAS3wEAQrA">doesn’t always result</a> in healthier eating. In our new research, we set out to <a href="https://link.springer.com/content/pdf/10.1186/s12889-024-18432-x.pdf">learn more</a> about why people eat the way they do – and what prevents them from eating better. Lack of time was a major <a href="https://onlinelibrary.wiley.com/doi/pdf/10.1111/obr.12472?casa_token=1D1mi-l0TR0AAAAA:dgebTQx-wgw7jbREfdawxZ5AZSDRztvrt8t1tuKyDy1x2mmXlyLDY8z9NbUf0v4hnh80HY_RbAk08Q">barrier</a> to cooking and eating healthier foods. <h2>How do you decide what to eat?</h2> We spoke with <a href="https://link.springer.com/content/pdf/10.1186/s12889-024-18432-x.pdf">17 adults</a> in a regional centre of Victoria. We chose a regional location because less research <a href="https://link.springer.com/content/pdf/10.1186/s40900-020-0179-6.pdf">has been done</a> with people living outside of metropolitan areas and because rates of obesity and other diet-related health issues are <a href="https://www.aihw.gov.au/reports/rural-remote-australians/rural-and-remote-health">higher</a> in such areas in Australia. Participants included a mix of people, including some who said they were over their “most healthy weight” and some who had previously dieted to lose weight. But all participants were either: <ul> <li>young women aged 18–24 with no children</li> <li>women aged 35–45 with primary school aged children</li> <li>men aged 35–50 living with a partner and with pre- or primary-school aged children.</li> </ul> We selected these groups to target <a href="https://www.sciencedirect.com/science/article/pii/S0022318212803669">ages and life-stages</a> in which shifts in eating behaviours may occur. Previous research has found younger women <a href="https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1470-6431.2007.00642.x?casa_token=33QKWwhc2ogAAAAA:ZvJ6wfXiRC_6eoqvoxD121JOSKSPmIRHcrdiGl2uHzkq5pY6VVPL6WI2DhmxQ2q9i6bBGvLiFl8afQ">tend to</a> be particularly concerned about appearance rather than healthy eating, while women with children often shift their focus to providing for their family. Men <a href="https://onlinelibrary.wiley.com/doi/pdf/10.1111/obr.12472?casa_token=KakMB6hAOQ0AAAAA:fLnpoxZQiiJIdEkg_TOcCq8hBwZef1iZETZKTiG5W6zW2x_PYzK0oLeOg5F9arKThq9RzMWEi4x4Xw">tend to be less interested</a> in what they eat. We asked participants about how they decided what food to eat, when, and how much, and what prevented them from making healthier choices. <h2>It’s not just about taste and healthiness</h2> We found that, although such decisions were determined in part by taste preferences and health considerations, they were heavily influenced by a host of other factors, many of which are outside the person’s control. These included other household members’ food preferences, family activities, workplace and time constraints, convenience and price. <a href="https://jamanetwork.com/journals/jamainternalmedicine/article-abstract/2767106">Healthy eating</a> means consuming a balanced diet rich in nutrients, including a variety of fruits, vegetables, whole grains, lean proteins and healthy fats, while limiting processed foods, added sugars and excessive salt. Healthy eating also includes how we eat and <a href="https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0244292">how we think about</a> food and eating, such as having a positive relationship with food. One 35- to 45-year-old woman, for example, said that time constraints and family preferences made it difficult to prepare healthier food: <blockquote> I love the chance when I can actually get a recipe and get all of the ingredients and make it properly, but that doesn’t happen very often. It’s usually what’s there and what’s quick. And what everyone will eat. </blockquote> One of the 35- to 50-year-old men also noted the extent to which family activities and children’s food preferences dictated meal choices: <blockquote> Well, we have our set days where, like Wednesday nights, we have to have mackie cheese and nuggets, because that’s what the boys want after their swimming lesson. </blockquote> <a href="https://onlinelibrary.wiley.com/doi/pdf/10.1111/joss.12649?casa_token=gsnU9O_G2GQAAAAA:mV2vtHlnEd0jqBGJPFkfml_ecLIDqwSlH5xksSwt4eQb_FP_UShyAKm9sLNnKy6Mkf2q9aKAlDEixA">Research shows</a> that children are often more receptive to new foods than their parents think. However, introducing new dishes takes additional time and planning. An 18- to 24-year-old woman discussed the role of time constraints, her partner’s activities, and price in influencing what and when she eats: <blockquote> My partner plays pool on a Monday and Wednesday night, so we always have tea a lot earlier then and cook the simple things that don’t take as long, so he can have dinner before he goes rather than buying pub meals which cost more money. </blockquote> Despite popular perceptions, healthy diets are not more expensive than unhealthy diets. A <a href="https://preventioncentre.org.au/wp-content/uploads/2017/03/1702_FB_LEE_4p_final_lr.pdf">study</a> comparing current (unhealthy) diets with what the <a href="https://www.health.gov.au/resources/publications/the-australian-dietary-guidelines">Australian Dietary Guidelines</a> recommend people should eat found that the healthy diet was 12–15% cheaper than unhealthy diets for a family of two adults and two children. However, learning and planning to prepare new types of meals <a href="https://www.mdpi.com/2072-6643/12/3/877">takes effort and time</a>. Simply educating people about what they should eat won’t necessarily result in healthier eating. People want to eat healthier, or at least know they should eat healthier, but other things <a href="https://link.springer.com/content/pdf/10.1007/s00394-017-1458-3.pdf">get in the way</a>. A key to improving people’s eating behaviours is to make it easy to eat more healthily. Policy changes to make healthy eating easier could include subsidising healthier foods such as fresh produce, providing incentives for retailers to offer healthy options, and ensuring access to nutritious meals in schools and workplaces. <h2>So how can you make healthier food choices easier?</h2> Here are five tips for making healthy choices easier in your household: <ol> <li> If certain days of the week are particularly busy, with little time to prepare fresh food, plan to cook in bulk on days when you have more time. Store the extra food in the fridge or freezer for quick preparation. </li> <li> If you’re often pressed for time during the day and just grab whatever food is handy, have healthy snacks readily available and accessible. This could mean a fruit bowl in the middle of the kitchen counter, or wholegrain crackers and unsalted nuts within easy reach. </li> <li> Discuss food preferences with your family and come up with some healthy meals everyone likes. For younger children, <a href="https://healthykids.nsw.gov.au/downloads/file/campaignsprograms/NewFoodsFussyEaters.pdf">try serving</a> only a small amount of the new food, and serve new foods alongside foods they already like eating and are familiar with. </li> <li> If you rely a lot on take-away meals or meal delivery services, try making a list ahead of time of restaurants and meals you like that are also healthier. You might consider choosing lean meat, chicken, or fish that has been grilled, baked or poached (rather than fried), and looking for meals with plenty of vegetables or salad. </li> <li> Remember, fruit and vegetables taste better and are often cheaper when they are in season. Frozen or canned vegetables are a <a href="https://www.sbs.com.au/news/article/the-cost-of-fresh-fruit-and-veggies-is-rising-is-canned-or-frozen-produce-just-as-healthy/tzuhnfrnr">healthy and quick alternative</a>.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/231489/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> </li> </ol> <a href="https://theconversation.com/profiles/nina-van-dyke-822557">Nina Van Dyke</a>, Associate Professor and Associate Director, Mitchell Institute, <a href="https://theconversation.com/institutions/victoria-university-1175">Victoria University</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/we-know-what-to-eat-to-stay-healthy-so-why-is-it-so-hard-to-make-the-right-choices-231489">original article</a>.

Food & Wine

No croutons, no anchovies, no bacon: the 100-year-old Mexican origins of the Caesar salad

<a href="https://theconversation.com/profiles/garritt-c-van-dyk-1014186">Garritt C. Van Dyk</a>, <a href="https://theconversation.com/institutions/university-of-newcastle-1060">University of Newcastle</a> The most seductive culinary myths have murky origins, with a revolutionary discovery created by accident, or out of necessity. For the Caesar salad, these classic ingredients are spiced up with a family food feud and a spontaneous recipe invention on the Fourth of July, across the border in Mexico, during Prohibition. Our story is set during the era when America banned the production and sale of alcohol from <a href="https://www.atf.gov/our-history/timeline/18th-amendment-1919-national-prohibition-act">1919–1933</a>. Two brothers, Caesar (Cesare) and Alex (Alessandro) Cardini, moved to the United States from Italy. Caesar opened a restaurant in California in 1919. <a href="https://historicalmx.org/items/show/195">In the 1920s</a>, he opened another in the Mexican border town of Tijuana, serving food and liquor to Americans looking to circumvent Prohibition. Tijuana’s Main Street, packed with saloons, became a popular destination for southern Californians looking for drink. It claimed to have the “<a href="https://www.google.com/books/edition/Satan_s_Playground/znhxImXG8e0C">world’s longest bar</a>” at the Ballena, 215 feet (66 metres) long with ten bartenders and 30 waitresses. The story of the Caesar salad, allegedly 100 years old, is one of a cross-border national holiday Prohibition-era myth, a brotherly battle for the claim to fame and celebrity chef endorsements. <h2>Necessity is the mother of invention</h2> <a href="https://classicsandiego.com/restaurants/caesars-restaurant-tijuana/">On July 4 1924</a>, so the story goes, Caesar Cardini was hard at work in the kitchen of his restaurant, Caesar’s Place, packed with holiday crowds from across the border looking to celebrate with food and drink. He was confronted with a chef’s worst nightmare: running out of ingredients in the middle of service. As supplies for regular menu items dwindled, Caesar decided to improvise with what he had on hand. He took ingredients in the pantry and cool room and combined the smaller leaves from hearts of cos lettuce with a dressing made from coddled (one-minute boiled) eggs, olive oil, black pepper, lemon juice, a little garlic and Parmesan cheese. The novel combination was a huge success with the customers and became a regular menu item: the Caesar salad. <h2>Et tu, Alex?</h2> There is another version of the origin of the famous salad, made by Caesar’s brother, Alex, at his restaurant in Tijuana. Alex claims Caesar’s “inspiration” was actually a menu item at his place, the “<a href="https://www.bbc.com/travel/article/20190521-the-surprising-truth-about-caesar-salad">aviator’s salad</a>”, named because he made it as a morning-after pick-me-up for American pilots after a long night drinking. His version had many of the same ingredients, but used lime juice, not lemon, and was served with large croutons covered with mashed anchovies. When Caesar’s menu item later became famous, Alex asserted his claim as the true inventor of the salad, now named for his brother. <h2>Enter the celebrity chefs</h2> To add to the intrigue, two celebrity chefs championed the opposing sides of this feud. <a href="https://www.google.com/books/edition/Appetite_for_Life/sEAfuK8lDjkC">Julia Child</a> backed Caesar, and <a href="https://www.google.com/books/edition/The_Essential_Cuisines_of_Mexico/gzsGAwAAQBAJ">Diana Kennedy</a> (not nearly as famous, but known for her authentic Mexican cookbooks) supported Alex’s claim. By entering the fray, each of these culinary heavyweights added credence to different elements of each story and made the variations more popular in the US. While Child reached more viewers in print and on television, Kennedy had local influence, known for promoting regional Mexican cuisine. While they chose different versions, the influence of major media figures contributed to the evolution of the Caesar salad beyond its origins. The original had no croutons and no anchovies. As the recipe was codified into an “official” version, garlic was included in the form of an infused olive oil. Newer versions either mashed anchovies directly into the dressing or added Worcestershire sauce, which has anchovies in the mix. Caesar’s daughter, Rosa, always maintained her father was the original inventor of the salad. She continued to market her father’s <a href="https://classicsandiego.com/restaurants/caesar-cardini-cafe/">trademarked recipe</a> after his death in 1954. Ultimately she won the battle for her father’s claim as the creator of the dish, but elements from Alex’s recipe have become popular inclusions that deviate from the purist version, so his influence is present – even if his contribution is less visible. <h2>No forks required – but a bit of a performance</h2> If this weren’t enough, there is also a tasty morsel that got lost along the way. Caesar salad was originally meant to be eaten as finger food, with your hands, using the baby leaves as scoops for the delicious dressing ingredients. For <a href="https://www.latimes.com/food/story/2024-01-30/original-caesar-salad-tijuana-100-years">presentation</a> in a restaurant, the salad was also created in front of the diners’ table, on a rolling cart, with some recommending a “true” Caesar salad was tossed only seven times, clockwise. This extra level of drama, performance and prescribed ritual was usually limited to alcohol-doused flaming desserts. To have a humble salad, invented in desperation, elevated to this kind of treatment made it a very special dish – even without any bacon.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/233099/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/garritt-c-van-dyk-1014186">Garritt C. Van Dyk</a>, Lecturer in History, <a href="https://theconversation.com/institutions/university-of-newcastle-1060">University of Newcastle</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/no-croutons-no-anchovies-no-bacon-the-100-year-old-mexican-origins-of-the-caesar-salad-233099">original article</a>.

Food & Wine

Can you drink your fruit and vegetables? How does juice compare to the whole food?

<a href="https://theconversation.com/profiles/emma-beckett-22673">Emma Beckett</a>, <a href="https://theconversation.com/institutions/unsw-sydney-1414">UNSW Sydney</a> Do you struggle to eat your fruits and vegetables? You are not alone. Less than 5% of Australians eat the recommended serves of fresh produce <a href="https://www.abs.gov.au/statistics/health/health-conditions-and-risks/dietary-behaviour/latest-release">each day</a> (with 44% eating enough fruit but only 6% eating the recommended vegetables). Adults <a href="https://www.eatforhealth.gov.au/food-essentials/five-food-groups">should aim to eat</a> at least five serves of vegetables (or roughly 375 grams) and two serves of fruit (about 300 grams) each day. Fruits and vegetables help keep us healthy because they have lots of nutrients (vitamins, minerals and fibre) and health-promoting bioactive compounds (substances not technically essential but which have health benefits) without having many calories. So, if you are having trouble <a href="https://theconversation.com/want-your-child-to-eat-more-veggies-talk-to-them-about-eating-the-rainbow-195563">eating the rainbow</a>, you might be wondering – is it OK to drink your fruits and vegetables instead in a juice or smoothie? Like everything in nutrition, the answer is all about context. <h2>It might help overcome barriers</h2> Common reasons for not eating enough fruits and vegetables are <a href="https://onlinelibrary.wiley.com/doi/abs/10.1111/1747-0080.12735">preferences, habits, perishability, cost, availability, time and poor cooking skills</a>. Drinking your fruits and vegetables in juices or smoothies can help overcome some of these barriers. <a href="https://onlinelibrary.wiley.com/doi/full/10.1111/j.1467-3010.2009.01760.x">Juicing or blending</a> can help disguise tastes you don’t like, like bitterness in vegetables. And it can blitz imperfections such as bruises or soft spots. Preparation doesn’t take much skill or time, particularly if you just have to pour store-bought juice from the bottle. Treating for food safety and shipping time does change the make up of juices slightly, but unsweetened juices still remain significant sources of <a href="https://pubmed.ncbi.nlm.nih.gov/12403253/">nutrients</a> and <a href="https://www.emerald.com/insight/content/doi/10.1108/00070701111140089/full/html?fullSc=1">beneficial bioactives</a>. Juicing can <a href="https://academic.oup.com/nutritionreviews/advance-article-pdf/doi/10.1093/nutrit/nuz031/30096176/nuz031.pdf">extend shelf life</a> and reduce the cost of nutrients. In fact, when researchers looked at the density of nutrients relative to the costs of common foods, <a href="https://www.mdpi.com/1660-4601/18/11/5771">fruit juice was the top performer</a>. <h2>So, drinking my fruits and veggies counts as a serve, right?</h2> How juice is positioned in healthy eating recommendations is a bit confusing. The <a href="https://www.eatforhealth.gov.au/food-essentials/five-food-groups/fruit">Australian Dietary Guidelines</a> include 100% fruit juice with fruit but vegetable juice isn’t mentioned. This is likely because vegetable juices weren’t as common in 2013 when the guidelines were last revised. <a href="https://www.eatforhealth.gov.au/food-essentials/five-food-groups/fruit">The guidelines</a> also warn against having juice too often or in too high amounts. This appears to be based on the logic that juice is similar, but not quite as good as, whole fruit. Juice has lower levels of fibre compared to fruits, with fibre important for gut health, heart health and promoting feelings of fullness. Juice and smoothies also release the sugar from the fruit’s other structures, making them “free”. The <a href="https://www.who.int/publications-detail-redirect/9789241549028">World Health Organization recommends</a> we limit free sugars for good health. But fruit and vegetables are more than just the sum of their parts. When we take a “<a href="https://hal.science/hal-01630639/">reductionist</a>” approach to nutrition, foods and drinks are judged based on assumptions made about limited features such as sugar content or specific vitamins. But these features might not have the impact we logically assume because of the complexity of foods and people. When humans eat varied and complex diets, we don’t necessarily need to be concerned that some foods are lower in fibre than others. Juice can retain the nutrients and bioactive compounds of fruit and vegetables and even add more because parts of the fruit we don’t normally eat, like the skin, can be included. <h2>So, it is healthy then?</h2> A recent <a href="https://academic.oup.com/nutritionreviews/advance-article/doi/10.1093/nutrit/nuae036/7659479?login=false">umbrella review of meta-analyses</a> (<a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8977198/">a type of research</a> that combines data from multiple studies of multiple outcomes into one paper looked at the relationship between 100% juice and a range of health outcomes. Most of the evidence showed juice had a neutral impact on health (meaning no impact) or a positive one. Pure 100% juice was linked to improved heart health and inflammatory markers and wasn’t clearly linked to weight gain, multiple cancer types or metabolic markers (such as blood sugar levels). Some health risks linked to drinking juice were <a href="https://academic.oup.com/nutritionreviews/advance-article/doi/10.1093/nutrit/nuae036/7659479?login=false">reported</a>: death from heart disease, prostate cancer and diabetes risk. But the risks were all reported in <a href="https://www.cancer.gov/research/participate/what-are-observational-studies#:%7E:text=Observational%20studies%20are%20research%20studies,over%20a%20period%20of%20time.">observational studies</a>, where researchers look at data from groups of people collected over time. These are not controlled and do not record consumption in the moment. So other drinks people think of as 100% fruit juice (such as sugar-sweetened juices or cordials) might accidentally be counted as 100% fruit juice. These types of studies are not good at showing the direct causes of illness or death. <h2>What about my teeth?</h2> The common belief juice damages teeth might not stack up. Studies that show juice damages teeth often <a href="https://www.frontiersin.org/articles/10.3389/fpubh.2019.00190/full">lump 100% juice in with sweetened drinks</a>. Or they use model systems like fake mouths that <a href="https://www.frontiersin.org/articles/10.3389/fpubh.2019.00190/full">don’t match</a> how people drinks juice in real life. Some <a href="https://www.frontiersin.org/journals/public-health/articles/10.3389/fpubh.2019.00190/full">use extreme scenarios</a> like sipping on large volumes of drink frequently over long periods of time. Juice is acidic and does contain sugars, but it is possible proper oral hygiene, including <a href="https://www.sciencedirect.com/science/article/abs/pii/S0300571207000152?via%3Dihub">rinsing, cleaning</a> and using straws can mitigate these risks. Again, reducing juice to its acid level misses the rest of the story, including the nutrients and bioactives contained in juice that are <a href="https://www.sciencedirect.com/science/article/pii/S2352385919300210#:%7E:text=Research%20has%20also%20confirmed%20that,prevention%20of%20oral%20inflammatory%20disorders.">beneficial to oral health</a>. <h2>So, what should I do?</h2> Comparing whole fruit (a food) to juice (a drink) can be problematic. They serve different culinary purposes, so aren’t really interchangeable. The Australian Guide to Healthy Eating recommends <a href="https://www.eatforhealth.gov.au/guidelines/australian-guide-healthy-eating">water as the preferred beverage</a> but this assumes you are getting all your essential nutrients from eating. Where juice fits in your diet depends on what you are eating and what other drinks it is replacing. Juice might replace water in the context of a “perfect” diet. Or juice might replace <a href="https://www.cambridge.org/core/journals/public-health-nutrition/article/substitution-of-pure-fruit-juice-for-fruit-and-sugarsweetened-beverages-and-cardiometabolic-risk-in-epicnl-a-prospective-cohort-study/B7314F1198109712DE0F2E44D919A6A7">alcohol or sugary soft drinks</a> and make the relative benefits look very different. <h2>On balance</h2> Whether you want to eat your fruits and vegetables or drink them comes down to what works for you, how it fits into the context of your diet and your life. Smoothies and juices aren’t a silver bullet, and there is no evidence they work as a “cleanse” or <a href="https://theconversation.com/lemon-water-wont-detox-or-energise-you-but-it-may-affect-your-body-in-other-ways-180035">detox</a>. But, with society’s low levels of fruit and vegetable eating, having the option to access nutrients and bioactives in a cheap, easy and tasty way shouldn’t be discouraged either.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/205222/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/emma-beckett-22673">Emma Beckett</a>, Adjunct Senior Lecturer, Nutrition, Dietetics & Food Innovation - School of Health Sciences, <a href="https://theconversation.com/institutions/unsw-sydney-1414">UNSW Sydney</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/can-you-drink-your-fruit-and-vegetables-how-does-juice-compare-to-the-whole-food-205222">original article</a>.

Food & Wine

Why doesn’t water help with spicy food? What about milk or beer?

<div class="theconversation-article-body"><a href="https://theconversation.com/profiles/daniel-eldridge-1494633">Daniel Eldridge</a>, <a href="https://theconversation.com/institutions/swinburne-university-of-technology-767">Swinburne University of Technology</a> Spicy foods taste spicy because they contain a family of compounds called capsaicinoids. Capsaicin is the major culprit. It’s found in chillies, jalapeños, cayenne pepper, and is even the active ingredient in <a href="https://pubmed.ncbi.nlm.nih.gov/31334983/">pepper spray</a>. Capsaicin doesn’t actually physically heat up your mouth. The burning sensation comes from receptors in the mouth reacting to capsaicin and sending a signal to the brain that something is very hot. That’s why the “hot” chilli sensation feels so real – we even respond by sweating. To alleviate the heat, you need to remove the capsaicin from your mouth. So why doesn’t drinking water help make that spicy feeling go away? And what would work better instead? <h2>Water-loving and water-hating molecules</h2> To help us choose what might wash the capsaicin away most effectively, it’s helpful to know that capsaicin is a hydrophobic molecule. That means it hates being in contact with water and will not easily mix with it. Look what happens when you try to mix hydrophobic sand with water. <figure><iframe src="https://www.youtube.com/embed/H8cj9CpHW7w?wmode=transparent&start=0" width="440" height="260" frameborder="0" allowfullscreen="allowfullscreen"></iframe></figure> On the other hand, hydrophilic molecules love water and are very happy to mix with it. You’ve likely seen this before. You can easily dissolve hydrophilic sugar in water, but it’s hard to wash away hydrophobic oils from your pan using tap water alone. If you try to wash hydrophobic capsaicin away with water, it won’t be very effective, because hydrophilic and hydrophobic substances don’t mix. Going for iced water will be even less effective, as hydrophobic capsaicin is even less soluble in water at lower temperatures. You may get a temporary sense of relief while the cold liquid is in your mouth, but as soon as you swallow it, you’ll be back where you started. Instead, a good choice would be to consume something that is also hydrophobic. This is because of an old-but-true adage in chemistry that “like dissolves like”. The idea is that generally, hydrophobic substances will not dissolve in something hydrophilic – like water – but will dissolve in something that is also hydrophobic, as this video shows: <figure><iframe src="https://www.youtube.com/embed/s5yfs-Pr_y8?wmode=transparent&start=0" width="440" height="260" frameborder="0" allowfullscreen="allowfullscreen"></iframe></figure> <h2>My mouth is on fire. What should I drink instead of water?</h2> A swig of oil would likely be effective, but is perhaps not so palatable. Milk makes for an ideal choice for two reasons. The first is that milk contains hydrophobic fats, which the capsaicin will more easily dissolve in, allowing it to be washed away. The second is that dairy products contain a protein called casein. Casein is an emulsifier, a substance that helps oils and water mix, as in this video: <figure><iframe src="https://www.youtube.com/embed/S4XeQhZRLDE?wmode=transparent&start=0" width="440" height="260" frameborder="0" allowfullscreen="allowfullscreen"></iframe></figure> Casein plays a large role in keeping the fat mixed throughout your glass of milk, and it also has a strong affinity for capsaicin. It will readily wrap up and encapsulate capsaicin molecules and assist in carrying them away from the receptor. This relieves the <a href="https://pubmed.ncbi.nlm.nih.gov/36510373/">burning sensation</a>. <h2>OK but I hate drinking milk. What else can I try?</h2> What about raita? This dish, commonly served with Indian curries, is made primarily from yoghurt. So aside from being its own culinary experience, raita is rich in fats, and therefore contains plenty of hydrophobic material. It also contains casein, which will again help lock up and remove the capsaicin. Ice cream would also work, as it contains both casein and large amounts of hydrophobic substances. Some studies have also shown that consuming <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9328490/">drinks with large amounts of sugar</a> can relieve spiciness. What about reaching for that ice cold beer? This is commonly suggested as a suitable approach to stop the burning. At first glance, this may seem a good idea because capsaicin is highly soluble in alcohol. However, most beers only contain between 4–6% alcohol. The bulk of the liquid in beer is water, which is hydrophilic and cannot wash away capsaicin. The small amount of alcohol in your beer would make it slightly more effective, but not to any great degree. Your curry and beer may taste great together, but that’s likely the only benefit. In truth, an alcoholic beverage is not going to help much unless you go for something with a much, much higher alcohol content, which comes with its own problems.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/226624/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/daniel-eldridge-1494633">Daniel Eldridge</a>, Senior Lecturer in Chemistry, <a href="https://theconversation.com/institutions/swinburne-university-of-technology-767">Swinburne University of Technology</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/why-doesnt-water-help-with-spicy-food-what-about-milk-or-beer-226624">original article</a>. </div>

Food & Wine

With all this bird flu around, how safe are eggs, chicken or milk?

<a href="https://theconversation.com/profiles/enzo-palombo-249510">Enzo Palombo</a>, <a href="https://theconversation.com/institutions/swinburne-university-of-technology-767">Swinburne University of Technology</a> Recent outbreaks of bird flu – in <a href="https://www.cdc.gov/flu/avianflu/avian-flu-summary.htm">US dairy herds</a>, <a href="https://www.abc.net.au/news/rural/2024-06-04/third-victorian-poultry-farm-declares-outbreak-avian-influenza/103932694">poultry farms in Australia</a> and elsewhere, and <a href="https://theconversation.com/bird-flu-is-hitting-australian-poultry-farms-and-the-first-human-case-has-been-reported-in-victoria-heres-what-we-know-230691">isolated cases</a> <a href="https://www.statnews.com/2024/05/30/bird-flu-third-case-human-infection-caused-respiratory-symptoms/">in humans</a> – have raised the issue of food safety. So can the virus transfer from infected farm animals to contaminate milk, meat or eggs? How likely is this? And what do we need to think about to minimise our risk when shopping for or preparing food? <h2>How safe is milk?</h2> Bird flu (or avian influenza) is a bird disease caused by specific types of influenza virus. But the virus can also infect cows. <a href="https://www.cdc.gov/flu/avianflu/avian-flu-summary.htm">In the US</a>, for instance, to date more than 80 dairy herds in at least nine states have been infected with the H5N1 version of the virus. Investigations are <a href="https://www.aphis.usda.gov/livestock-poultry-disease/avian/avian-influenza/hpai-detections/livestock">under way</a> to confirm how this happened. But we do know infected birds can shed the virus in their saliva, nasal secretions and faeces. So bird flu can potentially contaminate animal-derived food products during processing and manufacturing. Indeed, fragments of bird flu genetic material (RNA) were found in <a href="https://theconversation.com/how-bird-flu-virus-fragments-get-into-milk-sold-in-stores-and-what-the-spread-of-h5n1-in-cows-means-for-the-dairy-industry-and-milk-drinkers-228689">cow’s milk</a> from the dairy herds associated with <a href="https://www.statnews.com/2024/05/30/bird-flu-third-case-human-infection-caused-respiratory-symptoms/">infected US farmers</a>. However, the spread of bird flu among cattle, and possibly to humans, is likely to have been caused through contact with <a href="https://www.agriculturedive.com/news/contaminated-milk-equipment-potential-source-of-bird-flu-spread-to-cattle/712555/">contaminated milking equipment</a>, not the milk itself. The test used to detect the virus in milk – which uses similar PCR technology to lab-based COVID tests – is also highly sensitive. This means it can detect very low levels of the bird flu RNA. But the test does not distinguish between live or inactivated virus, just that the RNA is present. So from this test alone, we cannot tell if the virus found in milk is infectious (and capable of infecting humans). Does that mean milk is safe to drink and won’t transmit bird flu? Yes and no. In Australia, where bird flu has not been reported in dairy cattle, the answer is yes. It is safe to drink milk and milk products made from Australian milk. In the US, the answer depends on whether the milk is <a href="https://www.sciencedirect.com/science/article/abs/pii/B978184569216250013X?via%3Dihub">pasteurised</a>. We know pasteurisation is a common and reliable method of destroying concerning microbes, including influenza virus. Like most viruses, influenza virus (including bird flu virus) is inactivated by heat. Although there is little direct research on whether pasteurisation inactivates H5N1 in milk, we can extrapolate from what we know about heat inactivation of H5N1 in <a href="https://www.sciencedirect.com/science/article/pii/S0362028X22060732?via%3Dihub">chicken</a> and <a href="https://www.mdpi.com/2036-7481/13/4/60">eggs</a>. So we can be confident there is no risk of bird flu transmission via pasteurised milk or milk products. However, it’s another matter for unpasteurised or “raw” US milk or milk products. A recent <a href="https://www.nejm.org/doi/full/10.1056/NEJMc2405495">study</a> showed mice fed raw milk contaminated with bird flu developed signs of illness. So to be on the safe side, it would be advisable to avoid raw milk products. <h2>How about chicken?</h2> Bird flu has caused sporadic outbreaks in wild birds and domestic poultry worldwide, including <a href="https://theconversation.com/bird-flu-is-hitting-australian-poultry-farms-and-the-first-human-case-has-been-reported-in-victoria-heres-what-we-know-230691">in Australia</a>. In recent weeks, there have been <a href="https://www.abc.net.au/news/rural/2024-06-04/third-victorian-poultry-farm-declares-outbreak-avian-influenza/103932694">three reported outbreaks</a> in <a href="https://agriculture.vic.gov.au/biosecurity/animal-diseases/poultry-diseases/avian-influenza-bird-flu#h2-0">Victorian poultry farms</a> (two with H7N3 bird flu, one with H7N9). There has been <a href="https://www.abc.net.au/news/rural/2024-05-23/bird-flu-detected-western-australia-chicken-farm/103880002">one</a> reported outbreak in <a href="https://www.agric.wa.gov.au/livestock-biosecurity/avian-influenza">Western Australia</a> (H9N2). The strains of bird flu identified in the Victorian and Western Australia outbreaks can cause human infection, although these <a href="https://agriculture.vic.gov.au/biosecurity/animal-diseases/poultry-diseases/avian-influenza-bird-flu#h2-8">are rare</a> and typically result from close contact with infected live birds or <a href="https://www.who.int/emergencies/situations/avian-influenza-a-(h7n9)-virus-outbreak">contaminated environments</a>. Therefore, the chance of bird flu transmission in chicken meat is remote. Nonetheless, it is timely to remind people to handle chicken meat with caution as many dangerous pathogens, such as Salmonella and Campylobacter, can be found on chicken carcasses. Always handle chicken meat carefully when shopping, transporting it home and storing it in the kitchen. For instance, make sure no meat juices cross-contaminate other items, consider using a cool bag when transporting meat, and refrigerate or freeze the meat within two hours. <a href="https://theconversation.com/no-you-shouldnt-wash-raw-chicken-before-cooking-it-so-why-do-people-still-do-it-192723">Avoid washing your chicken</a> before cooking to prevent the spread of disease-causing microbes around the kitchen. Finally, cook chicken thoroughly as viruses (including bird flu) <a href="https://www.sciencedirect.com/science/article/pii/S0362028X22060732?via%3Dihub">cannot survive</a> cooking temperatures. <h2>Are eggs safe?</h2> The recent Australian outbreaks have occurred in egg-laying or mixed poultry flocks, so concerns have been raised about bird flu transmission via contaminated chicken eggs. Can flu viruses contaminate chicken eggs and potentially spread bird flu? It appears so. A <a href="https://www.sciencedirect.com/science/article/pii/S0196655306011862?via%3Dihub">report</a> from 2007 said it was feasible for influenza viruses to enter through the eggshell. This is because influenza virus particles are smaller (100 nanometres) than the pores in eggshells (at least 200 nm). So viruses could enter eggs and be protected from cleaning procedures designed to remove microbes from the egg surface. Therefore, like the advice about milk and meat, cooking eggs is best. The <a href="https://www.fda.gov/food/egg-guidance-regulation-and-other-information/questions-and-answers-regarding-safety-eggs-during-highly-pathogenic-avian-influenza-outbreaks">US Food and Drug Administration</a> recommends cooking poultry, eggs and other animal products to the proper temperature and preventing cross-contamination between raw and cooked food. <h2>In a nutshell</h2> If you consume pasteurised milk products and thoroughly cook your chicken and eggs, there is nothing to worry about as bird flu is inactivated by heat. The real fear is that the virus will evolve into highly pathogenic versions that can be transmitted from <a href="https://theconversation.com/bird-flu-is-hitting-australian-poultry-farms-and-the-first-human-case-has-been-reported-in-victoria-heres-what-we-know-230691">human to human</a>. That scenario is much more frightening than any potential spread though food.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/231280/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/enzo-palombo-249510">Enzo Palombo</a>, Professor of Microbiology, <a href="https://theconversation.com/institutions/swinburne-university-of-technology-767">Swinburne University of Technology</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/with-all-this-bird-flu-around-how-safe-are-eggs-chicken-or-milk-231280">original article</a>.

Food & Wine

How do I keep my fruit, veggies and herbs fresh longer? Are there any ‘hacks’?

<div class="theconversation-article-body"><a href="https://theconversation.com/profiles/senaka-ranadheera-199225">Senaka Ranadheera</a>, <a href="https://theconversation.com/institutions/the-university-of-melbourne-722">The University of Melbourne</a> We all know <a href="https://theconversation.com/frozen-canned-or-fermented-when-you-cant-shop-often-for-fresh-vegetables-what-are-the-best-alternatives-131678">fresh produce is good for us</a>, but fruit, vegetables and herbs have a tendency to perish quickly if left uneaten. This is because <a href="https://www.sciencedirect.com/science/article/abs/pii/S2212429219305188">even after harvesting</a>, produce from living plants tends to continue its biological processes. This includes respiration: producing energy from stored carbohydrates, proteins and fats while releasing carbon dioxide and water vapour. (Ever found a sprouting potato in your pantry?) On top of that, fresh produce also <a href="https://www.mdpi.com/journal/agriculture/special_issues/quality_safety_fresh_produce">spoils easily thanks to various microbes</a> – both harmless and ones that can cause disease, called pathogens. Simply chucking things in the fridge won’t solve the problem, as different types of plants will react differently to how they’re stored. So, how can you combat food waste and keep produce fresh for longer? Fortunately, there are some helpful tips. <h2>Freshness and quality begin at the farm</h2> Farmers always aim to harvest produce when it’s at an optimal condition, but both pre-harvest and post-harvest factors will affect freshness and quality even before you buy it. Pre-harvest factors are agricultural, such as climatic conditions, soil type and water availability. <a href="https://www.sciencedirect.com/science/article/abs/pii/S2212429219305188">Post-harvest factors</a> include washing and cleaning after harvesting, transportation and distribution, processing and packaging, and storage. As consumers we can’t directly control these factors – sometimes the veggies we buy just won’t be as good. But we can look out for things that will affect the produce once we bring it home. One major thing to look out for is bruised, wounded or damaged produce. This can happen at any stage of post-harvest handling, and can really speed up the <a href="https://www.sciencedirect.com/science/article/abs/pii/S0308814609001411">decay of your veggies and fruit</a>. Moisture loss through damaged skin speeds up deterioration and nutrient loss. The damage also makes it easier for <a href="https://www.sciencedirect.com/science/article/pii/S2468014119301943">spoilage microbes</a> to get in. <h2>To wash or not to wash?</h2> You don’t need to wash your produce before storing it. A lot of what we buy has already been washed commercially. In fact, if you wash your produce and can’t get it completely dry, the added moisture could speed up decay in the fridge. But washing produce <a href="https://theconversation.com/do-we-really-have-to-wash-fruit-and-vegetables-53039">just before you use it</a> is important to remove dirt and pathogenic bugs. Don’t use vinegar in your washing water despite what you see on social media. Studies indicate <a href="https://pubmed.ncbi.nlm.nih.gov/16496573/">vinegar has no effect</a> on lowering microbial loads on fresh produce. Similarly, don’t use baking soda. Even though there’s some evidence baking soda <a href="https://pubs.acs.org/doi/10.1021/acs.jafc.7b03118">can remove pesticide residues</a> from the surface of some produce, it’s not advisable at home. Just use plain tap water. <h2>Location, location, location</h2> The main thing you need is the correct type of packaging and the correct location – you want to manage moisture loss, decay and ripening. The three main storage options are on the counter, in the fridge, or in a “cool, dry and dark place”, such as the pantry. Here are some common examples of produce and where best to put them. Bananas, onion, garlic, potatoes, sweet potato and whole pumpkin will do better in a dark pantry or cupboard. Don’t store potatoes and onions together: onions produce a gas called ethylene that makes potatoes spoil quicker, while the high moisture in potatoes spoils onions. In fact, don’t store fruits such as apples, pears, avocado and bananas together, because these fruits <a href="https://www.tandfonline.com/doi/full/10.1080/15538362.2013.748378#:%7E:text=%27Malindi%27%20had%20higher%20respiration%20rates,retention%20in%20fruit%20during%20ripening">release ethylene gas</a> as they ripen, making nearby fruits ripen (and potentially spoil) much faster. That is, unless you do want to ripen your fruits fast. All leafy greens, carrots, cucumbers, cauliflower and broccoli will do best in the low-humidity drawer (crisper) in the fridge. You can put them in perforated plastic bags to retain moisture but maintain air flow. But don’t put them in completely sealed bags because this can slow down ripening while <a href="https://ucanr.edu/sites/hdnmastergardeners/files/338860.pdf">trapping carbon dioxide</a>, leading to decay and bad smells. Some fruits will also do best in the fridge. For example, apples and citrus fruits such as oranges can keep fresh longer in the fridge (crisper drawer), although they can stay at room temperature for short periods. However, don’t store watermelon in the fridge for too long, as it will lose its flavour and deep red colour if kept refrigerated <a href="https://ucanr.edu/sites/hdnmastergardeners/files/338860.pdf">for longer than three days</a>. Most herbs and some leafy vegetables – like celery, spring onions and asparagus – can be kept with stems in water to keep them crisp. Keep them in a well-ventilated area and away from direct sunlight, so they don’t get too warm and wilt. <figure><iframe src="https://www.youtube.com/embed/cHu10C1DAds?wmode=transparent&start=0" width="440" height="260" frameborder="0" allowfullscreen="allowfullscreen"></iframe><figcaption>Experimenting at home is a good way to find the best ways to store your produce.</figcaption></figure> <h2>Fight food waste and experiment</h2> Don’t buy too much. Whenever possible, buy only small amounts so that you don’t need to worry about keeping them fresh. Never buy bruised, wounded or damaged produce if you plan to keep it around for more than a day. “Process” your veggies for storage. If you do buy a large quantity – maybe a bulk option was on sale – consider turning the produce into something you can keep for longer. For example, banana puree made from really ripe bananas can be <a href="https://www.sciencedirect.com/science/article/abs/pii/S0023643817300853">stored for up to 14 days at 4°C</a>. You can use <a href="https://theconversation.com/frozen-canned-or-fermented-when-you-cant-shop-often-for-fresh-vegetables-what-are-the-best-alternatives-131678">freezing, blanching, fermentation and canning</a> for most vegetables. Consider vacuum sealing. Vacuum packaging of vegetables and berries can keep them fresh longer, as well. For example, vacuum-sealed beans can keep up to 16 months in the fridge, but will last only about <a href="https://www.vacpac.com.au/vacuum-sealed-life-expectancy-how-long-will-my-vacuum-sealed-products-last">four weeks in the fridge unsealed</a>. Keep track. Arrange your fridge so you can see the produce easily and use it all before it loses freshness. Experiment with storage hacks. Social media is full of tips and hacks on how best to store produce. Turn your kitchen into a lab and try out any tips you’re curious about – they might just work. You can even use these experiments as a way to teach your kids about the importance of reducing food waste. Grow some of your own. This isn’t <a href="https://theconversation.com/growing-your-own-food-and-foraging-can-help-tackle-your-ballooning-grocery-bill-heres-how-216264">feasible for all of us</a>, but you can always try having some herbs in pots so you don’t need to worry about keeping them fresh or using up a giant bunch of mint all at once. <a href="https://theconversation.com/health-check-are-microgreens-better-for-you-than-regular-greens-73950">Growing your own microgreens</a> could be handy, too.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/226763/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/senaka-ranadheera-199225">Senaka Ranadheera</a>, Associate Professor, <a href="https://theconversation.com/institutions/the-university-of-melbourne-722">The University of Melbourne</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/how-do-i-keep-my-fruit-veggies-and-herbs-fresh-longer-are-there-any-hacks-226763">original article</a>. </div>

Food & Wine

What’s the difference between vegan and vegetarian?

<div class="theconversation-article-body"> <a href="https://theconversation.com/profiles/katherine-livingstone-324808">Katherine Livingstone</a>, <a href="https://theconversation.com/institutions/deakin-university-757">Deakin University</a> Vegan and vegetarian diets are <a href="https://link.springer.com/article/10.1007/s00394-023-03086-z">plant-based diets</a>. Both include plant foods, such as fruits, vegetables, legumes and whole grains. But there are important differences, and knowing what you can and can’t eat when it comes to a vegan and vegetarian diet can be confusing. So, what’s the main difference? <h2>What’s a vegan diet?</h2> A <a href="https://link.springer.com/article/10.1007/s00394-023-03086-z">vegan diet</a> is an entirely plant-based diet. It doesn’t include any meat and animal products. So, no meat, poultry, fish, seafood, eggs, dairy or honey. <h2>What’s a vegetarian diet?</h2> A <a href="https://link.springer.com/article/10.1007/s00394-023-03086-z">vegetarian diet</a> is a plant-based diet that generally excludes meat, poultry, ﬁsh and seafood, but can include animal products. So, unlike a vegan diet, a vegetarian diet can include eggs, dairy and honey. But you may be wondering why you’ve heard of vegetarians who eat fish, vegetarians who don’t eat eggs, vegetarians who don’t eat dairy, and even vegetarians who eat some meat. Well, it’s because there are variations on a vegetarian diet: <ul> <li> a lacto-ovo vegetarian diet excludes meat, poultry, fish and seafood, but includes eggs, dairy and honey </li> <li> an ovo-vegetarian diet excludes meat, poultry, fish, seafood and dairy, but includes eggs and honey </li> <li> a lacto-vegetarian diet excludes meat, poultry, fish, seafood and eggs, but includes dairy and honey </li> <li> a pescatarian diet excludes meat and poultry, but includes eggs, dairy, honey, fish and seafood </li> <li> a flexitarian, or semi-vegetarian diet, includes eggs, dairy and honey and may include small amounts of meat, poultry, fish and seafood. </li> </ul> <figure class="align-center zoomable"><a href="https://images.theconversation.com/files/594474/original/file-20240516-16-wjg71m.png?ixlib=rb-4.1.0&q=45&auto=format&w=1000&fit=clip"><img src="https://images.theconversation.com/files/594474/original/file-20240516-16-wjg71m.png?ixlib=rb-4.1.0&q=45&auto=format&w=754&fit=clip" sizes="(min-width: 1466px) 754px, (max-width: 599px) 100vw, (min-width: 600px) 600px, 237px" srcset="https://images.theconversation.com/files/594474/original/file-20240516-16-wjg71m.png?ixlib=rb-4.1.0&q=45&auto=format&w=600&h=456&fit=crop&dpr=1 600w, https://images.theconversation.com/files/594474/original/file-20240516-16-wjg71m.png?ixlib=rb-4.1.0&q=30&auto=format&w=600&h=456&fit=crop&dpr=2 1200w, https://images.theconversation.com/files/594474/original/file-20240516-16-wjg71m.png?ixlib=rb-4.1.0&q=15&auto=format&w=600&h=456&fit=crop&dpr=3 1800w, https://images.theconversation.com/files/594474/original/file-20240516-16-wjg71m.png?ixlib=rb-4.1.0&q=45&auto=format&w=754&h=573&fit=crop&dpr=1 754w, https://images.theconversation.com/files/594474/original/file-20240516-16-wjg71m.png?ixlib=rb-4.1.0&q=30&auto=format&w=754&h=573&fit=crop&dpr=2 1508w, https://images.theconversation.com/files/594474/original/file-20240516-16-wjg71m.png?ixlib=rb-4.1.0&q=15&auto=format&w=754&h=573&fit=crop&dpr=3 2262w" alt="" /></a><figcaption></figcaption></figure> <h2>Are these diets healthy?</h2> A <a href="https://academic.oup.com/eurheartj/article/44/36/3423/7224412">2023 review</a> looked at the health effects of vegetarian and vegan diets from two types of study. Observational studies followed people over the years to see how their diets were linked to their health. In these studies, eating a vegetarian diet was associated with a lower risk of developing cardiovascular disease (such as heart disease or a stroke), diabetes, hypertension (high blood pressure), dementia and cancer. For example, in a <a href="https://www.sciencedirect.com/science/article/pii/S0002916523054497?via%3Dihub">study</a> of 44,561 participants, the risk of heart disease was 32% lower in vegetarians than non-vegetarians after an average follow-up of nearly 12 years. Further evidence came from randomised controlled trials. These instruct study participants to eat a specific diet for a specific period of time and monitor their health throughout. These studies showed eating a vegetarian or vegan diet led to reductions in weight, blood pressure, and levels of unhealthy cholesterol. For example, one <a href="https://jamanetwork.com/journals/jamainternalmedicine/fullarticle/1832195">analysis</a> combined data from seven randomised controlled trials. This so-called meta-analysis included data from 311 participants. It showed eating a vegetarian diet was associated with a systolic blood pressure (the first number in your blood pressure reading) an average 5 mmHg lower compared with non-vegetarian diets. It seems vegetarian diets are more likely to be healthier, across a number of measures. For example, a 2022 <a href="https://link.springer.com/article/10.1007/s00394-022-02942-8">meta-analysis</a> combined the results of several observational studies. It concluded a vegetarian diet, rather than vegan diet, was recommended to prevent heart disease. There is also <a href="https://link.springer.com/article/10.1007/s13668-024-00533-z">evidence</a> vegans are more likely to have bone fractures than vegetarians. This could be partly due to a lower body-mass index and a lower intake of nutrients such as calcium, vitamin D and protein. <h2>But it can be about more than just food</h2> Many vegans, where possible, do not use products that directly or indirectly involve using animals. So vegans would not wear leather, wool or silk clothing, for example. And they would not use soaps or candles made from beeswax, or use products tested on animals. The motivation for following a vegan or vegetarian diet can vary from person to person. Common motivations <a href="https://www.sciencedirect.com/science/article/pii/S2475299123157957">include</a> health, environmental, ethical, religious or economic reasons. And for many people who follow a vegan or vegetarian diet, this forms a central part of their <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9231820/">identity</a>. <h2>So, should I adopt a vegan or vegetarian diet?</h2> If you are thinking about a vegan or vegetarian diet, here are some things to consider: <ul> <li> eating more plant foods does not automatically mean you are eating a healthier diet. Hot chips, biscuits and soft drinks can all be vegan or vegetarian foods. And many <a href="https://theconversation.com/we-looked-at-700-plant-based-foods-to-see-how-healthy-they-really-are-heres-what-we-found-222991">plant-based alternatives</a>, such as plant-based sausages, can be high in added salt </li> <li> meeting the <a href="https://www.eatforhealth.gov.au/nutrient-reference-values/nutrients">nutrient intake targets</a> for vitamin B12, iron, calcium, and iodine requires more careful planning while on a vegan or vegetarian diet. This is because meat, seafood and animal products are good sources of these vitamins and minerals </li> <li> eating a plant-based diet doesn’t necessarily mean <a href="https://theconversation.com/why-you-should-eat-a-plant-based-diet-but-that-doesnt-mean-being-a-vegetarian-78470">excluding</a> all meat and animal products. A healthy flexitarian diet prioritises eating more whole plant-foods, such as vegetables and beans, and less processed meat, such as bacon and sausages </li> <li> the <a href="https://www.eatforhealth.gov.au/guidelines/australian-dietary-guidelines-1-5">Australian Dietary Guidelines</a> recommend eating a wide variety of foods from the five food groups (fruit, vegetables, cereals, lean meat and/or their alternatives and reduced-fat dairy products and/or their alternatives). So if you are eating animal products, choose lean, reduced-fat meats and dairy products and limit processed meats.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/225275/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> </li> </ul> <a href="https://theconversation.com/profiles/katherine-livingstone-324808">Katherine Livingstone</a>, NHMRC Emerging Leadership Fellow and Senior Research Fellow at the Institute for Physical Activity and Nutrition, <a href="https://theconversation.com/institutions/deakin-university-757">Deakin University</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/whats-the-difference-between-vegan-and-vegetarian-225275">original article</a>. </div>

Food & Wine

Cost of living: if you can’t afford as much fresh produce, are canned veggies or frozen fruit just as good?

<a href="https://theconversation.com/profiles/evangeline-mantzioris-153250">Evangeline Mantzioris</a>, <a href="https://theconversation.com/institutions/university-of-south-australia-1180">University of South Australia</a> The cost of living crisis is affecting how we spend our money. For many people, this means tightening the budget on the weekly supermarket shop. One victim may be fresh fruit and vegetables. Data from the <a href="https://www.abs.gov.au/media-centre/media-releases/australians-consuming-fewer-vegetables-fruit-and-less-milk#:%7E:text=Paul%20Atyeo%2C%20ABS%20health%20statistics,278%20to%20267%20to%20grams.%E2%80%9D">Australian Bureau of Statistics</a> (ABS) suggests Australians were consuming fewer fruit and vegetables in 2022–23 than the year before. The cost of living is likely compounding a problem that exists already – on the whole, Australians don’t eat enough fruit and vegetables. <a href="https://www.eatforhealth.gov.au/guidelines/australian-guide-healthy-eating">Australian dietary guidelines</a> recommend people aged nine and older should consume <a href="https://www.eatforhealth.gov.au/food-essentials/five-food-groups/fruit">two</a> serves of fruit and <a href="https://www.eatforhealth.gov.au/food-essentials/five-food-groups/vegetables-and-legumes-beans">five</a> serves of vegetables each day for optimal health. But in 2022 the <a href="https://www.abs.gov.au/statistics/health/health-conditions-and-risks/dietary-behaviour/latest-release">ABS reported</a> only 4% of Australians met the recommendations for both fruit and vegetable consumption. Fruit and vegetables are crucial for a healthy, balanced diet, providing a range of <a href="https://theconversation.com/were-told-to-eat-a-rainbow-of-fruit-and-vegetables-heres-what-each-colour-does-in-our-body-191337">vitamins</a> and minerals as well as fibre. If you can’t afford as much fresh produce at the moment, there are other ways to ensure you still get the benefits of these food groups. You might even be able to increase your intake of fruit and vegetables. <h2>Frozen</h2> Fresh produce is often touted as being the most nutritious (think of the old adage “fresh is best”). But this is not necessarily true. Nutrients can decline in transit from the paddock to your kitchen, and while the produce is stored in your fridge. Frozen vegetables may actually be higher in some nutrients such as <a href="https://pubmed.ncbi.nlm.nih.gov/25526594/">vitamin C and E</a> as they are snap frozen very close to the time of harvest. Variations in transport and storage can affect this slightly. <a href="https://pubs.acs.org/doi/10.1021/jf504890k">Minerals</a> such as calcium, iron and magnesium stay at similar levels in frozen produce compared to fresh. Another advantage to frozen vegetables and fruit is the potential to reduce food waste, as you can use only what you need at the time. As well as buying frozen fruit and vegetables from the supermarket, you can freeze produce yourself at home if you have an oversupply from the garden, or when produce may be cheaper. A <a href="https://www.growveg.com.au/guides/freezing-vegetables-and-herbs-the-garden-foodie-version/">quick blanching</a> prior to freezing can improve the safety and quality of the produce. This is when food is briefly submerged in boiling water or steamed for a short time. Frozen vegetables won’t be suitable for salads but can be eaten roasted or steamed and used for soups, stews, casseroles, curries, pies and quiches. Frozen fruits can be added to breakfast dishes (with cereal or youghurt) or used in cooking for fruit pies and cakes, for example. <h2>Canned</h2> Canned vegetables and fruit similarly often offer a cheaper alternative to fresh produce. They’re also very convenient to have on hand. The <a href="https://nchfp.uga.edu/how/can#gsc.tab=0">canning process</a> is the preservation technique, so there’s no need to add any additional preservatives, including salt. Due to the cooking process, levels of heat-sensitive nutrients <a href="https://onlinelibrary.wiley.com/doi/full/10.1002/jsfa.2825">such as vitamin C</a> will decline a little compared to fresh produce. When you’re using canned vegetables in a hot dish, you can add them later in the cooking process to reduce the amount of nutrient loss. To minimise waste, you can freeze the portion you don’t need. <h2>Fermented</h2> <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6723656/">Fermentation</a> has recently come into fashion, but it’s actually one of the oldest food processing and preservation techniques. Fermentation largely retains the vitamins and minerals in fresh vegetables. But fermentation may also enhance the food’s nutritional profile by creating new nutrients and allowing existing ones to be <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9352655/">absorbed more easily</a>. Further, fermented foods contain probiotics, which are beneficial for our <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10051273/">gut microbiome</a>. <h2>5 other tips to get your fresh fix</h2> Although alternatives to fresh such as canned or frozen fruit and vegetables are good substitutes, if you’re looking to get more fresh produce into your diet on a tight budget, here are some things you can do. 1. Buy in season Based on supply and demand principles, buying local seasonal vegetables and fruit will always be cheaper than those that are imported out of season from other countries. 2. Don’t shun the ugly fruit and vegetables Most supermarkets now sell “ugly” fruit and vegetables, that are not physically perfect in some way. This does not affect the levels of nutrients in them at all, or their taste. 3. Reduce waste On average, an Australian household throws out <a href="https://www.ozharvest.org/food-waste-facts/">A$2,000–$2,500</a> worth of food every year. Fruit, vegetables and bagged salad are the <a href="https://www.ozharvest.org/food-waste-facts/">three of the top five foods</a> thrown out in our homes. So properly managing fresh produce could help you save money (and benefit <a href="https://endfoodwaste.com.au/why-end-food-waste/">the environment</a>). To minimise waste, plan your meals and shopping ahead of time. And if you don’t think you’re going to get to eat the fruit and vegetables you have before they go off, freeze them. 4. Swap and share There are many websites and apps which offer the opportunity to swap or even pick up free fresh produce if people have more than they need. Some <a href="https://www.charlessturt.sa.gov.au/environment/sustainable-lifestyles/community-fruit-and-vege-swaps">local councils are also encouraging</a> swaps on their websites, so dig around and see what you can find in your local area. 5. Gardening Regardless of how small your garden is you can always <a href="https://www.gardeningaustraliamag.com.au/best-vegies-grow-pots/">plant produce in pots</a>. Herbs, rocket, cherry tomatoes, chillies and strawberries all grow well. In the long run, these will offset some of your cost on fresh produce. Plus, when you have put the effort in to grow your own produce, <a href="https://mdpi-res.com/sustainability/sustainability-07-02695/article_deploy/sustainability-07-02695.pdf?version=1425549154">you are less likely to waste it</a>.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/229724/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/evangeline-mantzioris-153250">Evangeline Mantzioris</a>, Program Director of Nutrition and Food Sciences, Accredited Practising Dietitian, <a href="https://theconversation.com/institutions/university-of-south-australia-1180">University of South Australia</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/cost-of-living-if-you-cant-afford-as-much-fresh-produce-are-canned-veggies-or-frozen-fruit-just-as-good-229724">original article</a>.

Food & Wine

Why a cold beer is best – chemically speaking

A quiet moment in a bar has led two researchers to study how alcohol tastes at different temperatures. No, this is real science. <div class="copy"> “Two years ago, Xiaotao Yang and I were drinking beer together. He had just finished his doctorate degree thesis and asked me, ‘what should we do next?’” says Lei Jiang, lead author of a new study <a href="https://doi.org/10.1016/j.matt.2024.03.017" target="_blank" rel="noopener">published</a> in the materials science journal Matter. Yang and Jiang are material scientists at the Chinese Academy of Sciences. “At the time, I was a scientific committee member of one of the biggest Chinese alcoholic beverage companies, and I had the idea to ask the question ‘why does Chinese baijiu have a very particular concentration of alcohol, either 38%–42%, 52%–53%, or 68%–75%?’” Baijiu is a clear grain liquor from East Asia. It’s typically distilled from fermented sorghum (a type of grass), though it is also sometimes made from rice, wheat, barley or millet. “Then we decided, let’s try something, so I put a drop of beer on my hand to see the contact angle,” says Jiang. Contact angle is a measure of surface tension. For example, water has a low contact angle which is why it appears bead-like when placed on a surface. Solutions with high <a href="https://cosmosmagazine.com/health/body-and-mind/debunks-vices-alcohol/">alcohol</a> concentration, however, have a higher contact angle meaning they flatten and spread out. Contact angle also reveals how molecules within the droplet interact with each other and the surface below. After plotting the concentration of ethanol (alcohol) against contact angle, the scientists were surprised with what they found. There is no linear relationship between alcohol concentration and contact angle. Instead, increasing the amount of alcohol leads to a series of plateaus and sharp rises in the plot. Further experiments showed that this arises out of the formation of clusters of ethanol and water in the solutions. At low concentrations, ethanol forms pyramid-like structures around the water molecules. At high concentrations, the ethanol molecules arrange end-to-end in a chain. They also found that these structures change depending on temperature. For example, 38%–42% and 52%–53% ethanol solutions have distinct cluster structures at around room temperature, but this difference disappears at higher temperatures, like 40°C. “Although there is only 1% difference, the taste of baijiu at 51% and 52% is noticeably different; the taste of baijiu at 51% is similar to that of lower alcohol content, such as 38%–42%. So, in order to achieve the same taste at a lower alcohol content, the distribution of baijiu products ranges most within the 38%–42% and 52%–53% categories,” says Jiang. The researchers also found that there is an increase in ethanol chains at 5°C in 5% and 11% ethanol solutions – the concentration range of beer – giving it a more “ethanol-like” taste which is generally preferred. “At low temperature, the tetrahedral (pyramid-shaped) clusters become the low concentration amount, and this is why we drink cold beer,” says Jiang. The researchers say their research could help beverage companies produce the best flavour with the lowest alcohol concentration. Image credits: Shutterstock <div> </div> <img id="cosmos-post-tracker" style="opacity: 0; height: 1px!important; width: 1px!important; border: 0!important; position: absolute!important; z-index: -1!important;" src="https://syndication.cosmosmagazine.com/?id=303282&title=Why+a+cold+beer+is+best+%E2%80%93+chemically+speaking" width="1" height="1" loading="lazy" aria-label="Syndication Tracker" data-spai-target="src" data-spai-orig="" data-spai-exclude="nocdn" /></div> <div id="contributors"> <a href="https://cosmosmagazine.com/science/chemistry/beer-taste-temperature/">This article</a> was originally published on <a href="https://cosmosmagazine.com">Cosmos Magazine</a> and was written by <a href="https://cosmosmagazine.com/contributor/evrim-yazgin/">Evrim Yazgin</a>. </div>

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Why a cold beer is best – chemically speaking