A growler is a container, typically made of glass, ceramic, or stainless steel, used to transport draft beer. It usually holds between 32 to 64 ounces of beer and is designed to keep the beverage fresh and carbonated. Many breweries and craft beer shops sell growlers filled with their beers, allowing customers to enjoy fresh draft beer at home. To use a growler, it is important to fill it properly to minimize air exposure, which can affect the beer's taste. After filling, the growler should be sealed tightly and kept cold. When ready to drink, it can be poured into a glass or consumed directly from the growler.