Glenfiddich 21 Year Old Gran Reserva is a premium, traditional Speyside single malt Scotch whisky celebrated for its innovative Caribbean rum cask finish. After aging for 21 years in traditional oak barrels, the whisky spends an additional four months maturing in hand-selected Caribbean rum casks under the care of Malt Master Brian Kinsman. This unique double-maturation process introduces layers of vibrant tropical sweetness and exotic warmth to the distillery's signature elegant character.