Wheat is grain is grown on more land area than any other commercial food. World trade in wheat is greater than for all other crops combined. Globally wheat is a cereal grain, originally from the Levant region of the Near East but now cultivated worldwide.
Barley a member of the grass family, is a major cereal grain. It was one of the first cultivated grains and is now grown widely. Barley grain is a staple in Tibetan cuisine and was eaten widely by peasants in Medieval Europe.
Maize known in some English-speaking countries as corn, is a large grain plant domesticated by old times. The leafy stalk produces ears which contain the grain, which are seeds called kernels. Maize kernels are often used in cooking as a starch.
The six major types of maize are dent, flint, pod, popcorn, flour, and sweet.
