Nuts are a type of fruit that is consists of a hard shell and a, usually edible, seed inside. Botanically, nuts have to have a shell which does not open to release the seed.
In more general usage, the term "nut" is used to describe a wide range of true, botanical, nuts, seeds and even beans. Many foods called nuts, including but not limited to pecans, pistachios, almonds and peanuts, are culinary nuts, rather than botanical ones. Culinary nuts are generally large, oily kernels that are found in a shell and eaten.
Foods that are called nuts are typically very high in many different nutrients, including amino acids, vitamins and fats. Some nuts can also reduce the likelihood of suffering from certain disease, such as coronary heart disease, when consumed. Raw nuts are the healthiest, but they are also cooked, roasted, salted and pickled.
Nuts are also used in a variety of different vegetarian dishes as a source of protein, being used to make fake vegetarian and vegan "meat" dishes such as nut cutlets and burgers.
Nuts have been eaten for a long, long time, with evidence showing them being eaten over 780,000 years ago.
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