Oatmeal is made of oat groats (i.e. grains) that have either been ground, crushed, steel-cut, or rolled. Ground oats are also called "white oats". Steel-cut oats are known as "coarse oatmeal" or "Irish oatmeal" or "pinhead oats". The term "oatmeal" is also used in the U.S. and parts of Canada to mean oat porridge.