Bowmore 15 Years Old is a prime example of how a sherry cask finish can enhance a whisky. This single malt first matured in bourbon barrels. It then spent three years in Oloroso sherry casks, giving the whisky its rich, deep colour and robust warming finish. On the nose, Bowmore 15 Years Old has rich aromas of dark chocolate, raisins and classic Bowmore smokiness. Layers of cedar wood and rich treacle toffee develop on the palate, leading to a fairly spicy finish with notes of toffee, sherry and barley.