4 Wheat flour and other cereals White wheat flour is the largest ingredient in nearly all biscuits. It is made from wheat by removing the brown surface coating and the embryo(the bran and the germ) and reducing the particle size to a fine powder. Modern milling methods are very complex involving many stages principally because it is difficult to separate the bran from the white central part (known as the endosperm) of the wheat erdos starchy endosperm 1 Longitudinal section of wheat grain4 Wheat flour and other cereals 4.1 Introduction White wheat flour is the largest ingredient in nearly all biscuits. It is made from wheat by removing the brown surface coating and the embryo (the bran and the germ) and reducing the particle size to a fine powder. Modern milling methods are very complex involving many stages principally because it is difficult to separate the bran from the white central part (known as the endosperm) of the wheat grain (Fig. 1). endosperm pericarp seed coats W 1 Longitudinal section of wheat grain 15