XO Rum Cask Finish is a Tullamore D.E.W. Original triple distilled triple blend of pot still, malt and grain Irish whiskey finished in the finest first fill XO rum casks to deliver sweet tropical flavors. This XO Rum Cask Finish pays tribute to the role of Irish Immigrants in the development of rum in the Caribbean in the 17th Century. Barrels are carefully selected to age Demerara Rum to impart their distinctive tropical fruit and warm spice flavours to Tullamore D.E.W. XO Caribbean Rum Cask Finish Irish Whiskey.