Businesses in the manufacture of grain mill products process cereals and other grains into flour, meal and related ingredients. They typically clean and sort raw grain, remove impurities, condition it for milling, then grind, sift or otherwise process it to achieve different textures and specifications. Common grains include wheat, oats, maize, barley and rice, with products ranging from fine white flour to wholemeal flour, oat products, semolina, maize meal and rice flour. Mills may produce standard or specialist ingredients for bakeries, food manufacturers, catering businesses and retailers. Some also blend flours or prepare grain products for particular uses, such as baking, breakfast foods or cooking. Bran, husks and other milling residues may be separated and supplied for animal feed or other uses. Businesses in this category generally focus on transforming grain into usable food ingredients, rather than growing crops or making finished bakery products.