Wheat is a cereal grain, a type of grass, that is cultivated worldwide for its edible seeds, commonly called kernels or grains. It is a staple food and a major source of starch, carbohydrates, and energy. Wheat is also a good source of protein, vitamins, dietary fiber, and phytochemicals. It's a versatile crop used to make flour for bread, pasta, and other baked goods, as well as being a thickener in soups and sauces.