Food is any substance that, by absorption into the human organism, contributes to preserving its homeostasis. Food in the narrower sense consists of the following ingredients: Carbohydrates, Proteins, Fats, Vitamins, and Minerals. Food enables a person to perform daily activities. It is necessary to eat a variety of food because this is the only way to provide all the necessary substances and prevent excessive intake of undesirable substances. Milk and milk products should be included in the daily menu, as well as foods from the meat and fish group, poultry, eggs, legumes, nuts, and seeds. Cereals and cereal products, as well as fruits and vegetables, should be provided every day, with seasonal fresh fruits and vegetables mostly used, and if there is a lack of them, frozen ones can also be used. Food products with a high content of fat, sugar, and salt should be prepared rarely and in relatively small quantities.