A "Half Barrel" is a type of container used primarily for storing and transporting liquids, especially beverages like beer. It is typically half the size of a full barrel, which usually holds 31 gallons. A half barrel can hold about 15.5 gallons, making it a popular choice for breweries and bars. In the brewing industry, a half barrel is often referred to as a keg. This size is commonly used for draft beer, allowing establishments to serve larger quantities while maintaining freshness. The half barrel is a standard size in the United States, facilitating easy handling and distribution in the beverage market.