Any food made from wheat, rice, oats, cornmeal, barley or another cereal grain is a grain product. Bread, pasta, oatmeal, breakfast cereals, tortillas, and grits are examples of grain products. Grains are divided into 2 subgroups, Whole Grains and Refined Grains. Whole grains contain the entire grain kernel ― the bran, germ, and endosperm.