Barley is a cereal cultivated mainly for its grains, which are used in the preparation of many foods, such as bread, cereals, flours and alcoholic drinks. Barley is rich in protein, dietary fibers and nutrients such as iron, zinc and B vitamins. It is also a source of complex carbohydrates and minerals, such as calcium and potassium. Due to its high fiber and protein content, barley is considered a healthy and nutritious diet.