When did people start eating chickens? People have eaten chickens for thousands of years, but it only became cheap after World War 2. Chickens were domesticated between 10,000 and 7,000 years ago in southeast Asia. The wild chicken that people domesticated was the Southeast Asian Red Junglefowl. They were probably domesticated because of the eggs […]
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Why does beer have alcohol? Because the yeast cells in the beer feed on sugar and produce ethanol. Yeast is an egg-shaped single-celled fungus. There are 1,500 different species of yeast. 1% of all fungal species are yeast. Humans use yeast for several things, but the most common are bread and alcoholic drinks. When yeast
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What is high fructose corn syrup? It is a sweetener made from cornstarch. There is a lot of debate over whether high fructose corn syrup is bad for you or not. The American Food and Drug Administration says there is no evidence to show that high fructose corn syrup is any worse for you than
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How is decaffeinated coffee made? There are several different methods, but they all involve washing the caffeine out of the coffee beans. Coffee grows on a bush, which is usually about 1.5 m high. The coffee bean is the seed of the bush and it grows inside a red cherry. The cherries are picked when
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How are foods frozen? They are dipped in something cold, pressed between cold plates, or exposed to cold air. Once vegetables or fruits are picked, or once meat is butchered, they have to be frozen as quickly as possible. The second these foods are exposed to the air, they start to break down. The faster
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Can you eat the skin of all fruit and vegetables? Some fruits have a poisonous skin that it is better to avoid. The skin of some vegetables is too difficult to chew. What is a fruit? A fruit is a mature, ripened ovary, and the contents of the ovary. The ovary is the female part
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Why are carrots orange? Because they contain carotenoids, which are orange. Carotenoids are organic pigments that are produced by plants, algae, and some bacteria and fungi. They can be found in vegetables such as pumpkins, carrots, corn, and in animals such as canaries, lobsters, and flamingoes. In plants and algae, carotenoids absorb sunlight for photosynthesis.
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Why do our stomachs grumble? Because the muscles in the stomach and small intestines are contracting and there is no food in there to muffle the sound. Our stomachs rumble a lot of the time, but we usually cannot hear it because the food in our stomachs and small intestines soak up the sound. The
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How does an air fryer work? A fan circulates hot air at high speed which cooks the food. Firstly, let’s look at how food cooks when it is fried. With deep-frying, food is submerged in oil that is heated to between 177 and 191˚C. That seems pretty hot, but it is far below the boiling
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Why do we get a headache when we are dehydrated? You get a headache when you are dehydrated because your brain shrinks and pulls away from the sides of your skull. The human body is about 60% to 70% water. Some parts of the body contain more water than other parts. The blood and the
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