What is gluten? Gluten is a protein found in: • Wheat • Rye • Barley • Oats (there has been some debate about this) Hidden sources of gluten Always read the food labels as gluten may be present in some of these ingredients: • Baking powder • Beer, stout, lager, ale • Canned soups • Communion hosts • Confectionery • Custard powder • Dressings, gravies and sauces • Hot chips • Hot chocolate • Icing sugar mixture • Flavoured milks • Margarine (may contain breadcrumbs) • Medicati