Casks are large containers, typically made of wood, used for storing and aging liquids like whiskey, wine, and beer. They are often crafted from oak, which imparts unique flavors to the liquid inside. Casks come in various sizes, with the most common being the barrel, which holds around 200 liters. The aging process in casks allows the liquid to develop complex flavors and aromas as it interacts with the wood. This interaction can also influence the color and texture of the beverage. Casks are essential in the production of many alcoholic drinks, contributing significantly to their final taste profile.