The Glenlivet Single Cask is an exclusive tasting experience. A unique blend bottled at its natural cask strength and without chill filtration that allows it to retain the same purity it had while maturing in the cask. Aged in first fill Sherry Butt Barrels for 16 years,, there are only 606 bottles of this U.S. limited-edition whisky. Every cask holds a flavor which can never be replicated and every bottle is individually numbered.