A whiskey cask is a barrel used to age whiskey. Casks are made from a variety of woods, including oak, sherry, and port. The type of wood used imparts different flavors and aromas to the whiskey. Casks are typically charred on the inside before whiskey is added, which helps to create a more complex flavor profile.
Whiskey casks play an important role in the aging process. The whiskey interacts with the wood of the cask, extracting flavors and aromas. The length of time that the whiskey is aged in the cask will also affect its flavor. Whiskey that is aged for a longer period of time will typically have a more complex and flavorful profile.