Wheat, oats, and barley were the predominant cereals in Europe before the introduction of rice and corn from Asia and America, respectively. Wheat usually is milled and turned into bread. Oats can be combined with hot milk to make porridges and oatmeal, which are often combined with sugar or honey for extra flavor. Barley grows in diverse climates and is used for a variety of foods, and in Britain, it is combined with fruit squashes to make a healthy drink.