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Animal milk is used to create over 1,700 distinct varieties of cheese; creamy Brie, buttery Gouda, crumbly Parmesan, stringy mozzarella, sharp Cheddar, to name a few.
The staggering variety of cheeses is testimony to cheesemakers' creativity throughout the ages, but the real stars of the show are the microbes.
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All cheeses start from animal milk, including cow, buffalo, goat, sheep, and even camel.
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Over the months of ripening, smelly parts can interact in new ways to produce more flavour-carrying molecules, such as a hint of nutty, spicy, woody, grassy, or burnt oats. More fat in the cheese generally makes it tastier.
Flavour compounds typically dissolve well in oils, fats, and alcohol, but poorly in water. Fat-rich foods will therefore cover your tongue with a flavour that lingers.
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Some microorganisms digest more than proteins, they also digest fat, such as the Penicillium moulds found in blue cheese. The broken-down molecules may have a peppery taste, while others create an off-putting stink.
One of the substances, known as mushroom alcohol, has a mouldy smell, also found in breath and sweat. The really stinky cheeses, such as Munster and Limburger, contain molecules identical to those given off from old socks.
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Our food-obsessed minds crave novelty. When we have a new flavour offered, the desire to try something novel is irresistible.
There are also some scientific-sounding claims that cheese is as addictive as cocaine because it contains opium-like chemicals called casomorphin peptides.
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A complete loss of smell, known as anosmia, can occur after a cold, sinus infection or even a bump to the head.
Anosmia affects the flavour of food. However, it isn't always permanent and may recover naturally or through exercises like 'smell training' to re-stimulate the olfactory system.
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Vegan fast food alternatives may often be worse for your health than the meat equivalent. It is good that people start to think about plant-based foods, but the danger lies in thinking t...
Plant-based protein sources are not the same as animal protein sources. Proteins are made up of amino acids which are the building blocks of every cell and hormone in our body. Meat protein contains all nine essential amino acids, whereas plant-based protein usually lacks at least one of the nine essential amino acids our body needs.
Unripe jackfruit makes a convincing choice for pulled pork alternatives, curries and burgers. But it is almost valueless if you needed protein since jackfruit consists of carbohydrates. Vegan burgers are made up of beans, but this is not a complete protein source.
One study found that 25% of vegans (mainly women) had very low blood iron levels, compared to 0% of omnivores.
Plants like whole grains, legumes and spinach are high in iron but is not always the best type. Animal sources contain haem iron. Non-haem iron, found in plants, is not as well absorbed by the body.
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Should humanity face a nuclear apocalypse of worldwide war, we need to understand which foods might be safe for survivors to eat, and how long the foods will last.
To understand this, we ne...
Most foods spoil because of the growth of microbes. Preserving food is an attempt to limit microbial growth. Food can be preserved by drying, salting, chilling, or storing in air-tight containers.
Preservatives are used in foods to extend their shelf lives. One of McDonald's Big Mac in Iceland is an example of a long-lasting processed food. It has been on display since 2009, in a glass box. Preservatives that has been discontinued by McDonald's are: