After distillation, Glenmorangie 18 Year Old Extremely Rare Single Malt Scotch Whisky is aged for fifteen years in used bourbon casks. Approximately 30% of the whisky is then double-barreled, or finished, in Spanish Oloroso sherry casks for an additional three years. After both the original and double-barreled whisky have reached 18 years of age, they are blended together in order to create Glenmorangie 18 Year Old Extremely Rare Whisky.
The whisky has a deep amber color, with notes of mandarin, banana, apple and pear. Well-textured, the flavors open up to notes of apricots, nuts and vanilla, along with hints of raisins and fudge. The finish, which lingers, has a touch of almonds and sweet citrus.
Glenmorangie 18 Year Old Extremely Rare Whisky earned the Double Gold Medal at the San Francisco World Spirits Competition in 2010, and the title "Best in Class" at the International Wine and Spirits Competition in 2009.