Cooking facts for kids
Cooking is the art and skill of preparing food for us to eat. This can be done with or without heat. Cooking styles and ingredients are different all over the world. Some people grill food over a fire, while others use electric stoves or ovens. These differences show off unique traditions, economies, and cultures.
How food is cooked also depends on the cook's skills and training. People cook at home, and professional chefs cook in restaurants. Sometimes, food can even "cook" without heat, like in ceviche. This South American dish uses the acids in lemon or lime juice to prepare fish.
Humans are unique because we prepare food using heat or fire. This might have started about 2 million years ago, but we have strong proof from about 1 million years ago. As farming, trade, and travel grew, cooks found many new ingredients. New inventions, like pottery for boiling water, also helped cooking methods grow. Today, some cooks even use advanced science to make food taste even better!
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History of Cooking
Scientists think early humans might have started cooking between 1.8 and 2.3 million years ago. Evidence from a cave in South Africa shows humans controlled fire about 1 million years ago. There's also proof that Homo erectus was cooking food as early as 500,000 years ago.
Many experts agree that Homo erectus used fire in a controlled way around 400,000 years ago. From 300,000 years ago, we find ancient fireplaces, earth ovens, burnt animal bones, and flint across Europe and the Middle East. Experts believe widespread cooking fires began about 250,000 years ago when hearths (fireplaces) started appearing. Some of the oldest hearths found are at least 790,000 years old!
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In the 17th and 18th centuries, food was a big part of identity in Europe. Later, in the 19th century, during the "Age of Nationalism", food became a symbol of a country's identity.
The Columbian exchange greatly changed cooking history. This was when foods moved between the Old World (Europe, Asia, Africa) and the New World (the Americas). Foods like potatoes, tomatoes, corn, beans, chili peppers, chocolate, and pumpkins traveled from the New World to the Old World. This had a huge impact on cooking there. Similarly, foods like cattle, sheep, pigs, wheat, rice, apples, and carrots moved from the Old World to the New World, changing cooking in the Americas.
The Industrial Revolution brought big changes like mass-production and packaging of food. Factories started processing and canning many foods. In the 1920s, freezing methods, cafeterias, and fast-food places became popular.
Governments also started giving advice on healthy eating. The first US guide for healthy eating was in 1916. Later, in 1974, the "food pyramid" was introduced in Sweden to help people eat well.
What's in Our Food?
Most ingredients we cook with come from living things. Vegetables, fruits, grains, nuts, herbs, and spices come from plants. Meat, eggs, and dairy products come from animals. Mushrooms and yeast (used in baking) are types of fungi. Cooks also use water and minerals like salt. Sometimes, wine or other spirits are used too.
Natural ingredients have different amounts of molecules called proteins, carbohydrates, and fats. They also contain water and minerals. Cooking changes these molecules in chemical ways.
Carbohydrates in Cooking
Carbohydrates include sugars like sucrose (table sugar) and simple sugars like glucose (from sugar) and fructose (from fruit). They also include starches found in flour, rice, and potatoes.
When carbohydrates are heated, interesting things happen. Long-chain sugars like starch can break down into simpler sugars. Simple sugars can form syrups. If sugars are heated until all the water is gone, they start to caramelize. This creates a rich, sweet flavor. Also, heating sugars and proteins together causes the Maillard reaction, which gives food a delicious browned flavor.
A mix of starch with fat or water can make dishes thicker when gently heated. In European cooking, a mix of butter and flour called a