Barley and their hybrids and derivatives, barley contains gluten, which makes it an unsuitable grain for consumption by people with gluten-related disorders, such as celiac disease, non-celiac gluten sensitivity and wheat allergy sufferers, among others. Nevertheless, some wheat allergy patients can tolerate barley or rye. Barley is a key ingredient in beer and whisky production. Two-row barley is traditionally used in German and English beers. Six-row barley was traditionally used in US beers, but both varieties are in common usage now. Distilled from green beer, whiskey has been made primarily from barley in Ireland and Scotland, while other countries have used
Wheat gluten (food) rehydrated to form the gluten and then cooked. Seitan produced from wheat flour is a longer process. First a dough is made by hydrating the flour, then the dough is kneaded under running water to remove the starch from the dough, leaving only the gluten. The gluten is then cut into pieces and cooked via steaming, boiling, frying, or other methods. Wheat gluten is used both as a protein source and binding ingredient in pet foods. Wheat gluten from China adulterated by melamine was blamed as the cause of the 2007 pet food recalls. Wheat gluten (food) Wheat gluten is