A type of distilled alcoholic beverage made from fermented grain mash. Various grains, which may be malted, are used for different varieties, including barley, corn (maize), rye, and wheat. Whiskey is typically aged in wooden casks.
Whiskey is a strictly regulated spirit worldwide with many classes and types. The typical unifying characteristics of the different classes and types are the fermentation of grains followed by distillation and ageing in wooden barrels.