What's in a name? Bunnahabhain 9 Year Old 2001 Cask 1764 - Cask Strength Collection (Signatory) whisky is called whisky because it's produced in Scotland. Were it from America it would be spelled Bunnahabhain 9 Year Old 2001 Cask 1764 - Cask Strength Collection (Signatory) whiskey, rather than whisky.