All foods and beverages containing wheat: bread and any pastry made from wheat flour, couscous, bulgur, semolina, bran, spelled, wheat starch, wheat grass, wheat kernels, durum wheat, breakfast cereals containing gluten, crackers, croutons, soup almonds, beer. Foods containing rye: bread, matzah, crackers. Foods containing barley: pearl barley, malt Foods containing oats: Quaker, granola, yogurt with granola, oat bran. Oats contain a gliadin-like protein called abenin.