The whiskeys in the Tullamore Dew 12 Year Old Special Reserve have a very high concentration of pot still in addition to grain and malt whiskeys, triple distilled between 12 and 15 years ago from unmalted as well as malted barley. It is a very fine aged whiskey with more complexity coming from the additional aging. All the whiskies in the blend are matured in old Bourbon and Oloroso sherry casks, slowly reaching their perfection. The sherry cask finish gives a sweet nuttiness to the taste. It also has pleasant spicy back notes.