common oat cereal food product milled oat food product steel cut oats 2019-10-15T15:29:59Z Irish oatmeal Steel-cut oats (US) are groats (the inner kernel with the inedible hull removed) of whole oats which have been chopped into two or three pinhead-sized pieces (hence the names; "steel-cut" comes from the steel blades). pinhead oats coarse oatmeal ready for release