wheat

 Globally, after maize, wheat is the second most produced food among the cereal crops; rice ranks third.

Wheat grain is a staple food used to make flour for leavened, flat and steamed breads;cookies, cakes, pasta, juice, noodles and couscous;^[3] and for fermentation to make beer,^[4] alcohol, vodka^[5] or biofuel.

read more at http://en.wikipedia.org/wiki/International_wheat_production_statistics and http://en.wikipedia.org/wiki/Wheat