This gluten is found in malted barley, which is used to make
beer and some hard ciders. Some
beer also contains wheat. Other beverages sometimes made from wheat, rye, and barley include vodka, whiskey, gin and bourbon. The allergy to alcohol or to coke even can be due to preservatives, coloring agents, yeast used for brewing, sulfites, gluten products in the alcohol or even to grapes and other bases.