what are gluten grains
Gluten is the name given to the protein found in some, but not all, grains: 1  Grains containing gluten â wheat (including wheat varieties like spelt, kamut, farro and durum, plus products like bulgar and semolina), barley, rye, triticale and oats*. 2  Gluten free grains â corn, millet, rice, sorghum.