Flour

Flour, fine powder ground from the grains or starchy portions of wheat, rye, corn, rice, potatoes, bananas, or beans. Plain white flour is produced from wheat; soft wheat produces flour used for cakes, and hard wheat, with a higher gluten content, makes flour used for bread. Flour is made from the endosperm, which constitutes about 84% of the grain; the remainder comprises the bran, which is the outer layers of the grain, and the germ, which is the embryo.