The term 'pub staple' refers to three alcoholic beverages commonly found in pubs: ALE, BEER, and RYE. ALE is a type of BEER brewed using a warm fermentation method, which results in a sweet, full-bodied flavor. BEER is an alcoholic beverage made from fermented grains, such as barley, wheat, and hops. RYE is a type of whiskey made from fermented RYE grain. All three of these beverages are popular choices in pubs and bars around the world.