Bar bottles refer to the various types of alcoholic beverages that are stored and served in glass bottles. The most common bar bottles include ryes, ales, and gins. Rye is a type of whiskey made from rye grain, while ale is a type of beer brewed with hops and malted barley. Gin is a spirit flavored with juniper berries and other botanicals. All three of these drinks can be found in bars and restaurants around the world.