Barley beer is a type of alcoholic beverage made primarily from barley, a cereal grain. The brewing process involves malting the barley, which activates enzymes that convert starches into sugars. These sugars are then fermented by yeast, producing alcohol and carbonation. This beer can vary in flavor, color, and strength, depending on the type of barley used and the brewing techniques applied. Common styles of barley beer include lager, ale, and stout. Barley beer is enjoyed worldwide and is often paired with food to enhance the dining experience.