XO rum casks deliver sweet tropical flavours. Bringing delicious caramel and banana notes with hints of dates and raisins. Tullamore D.E.W. XO Caribbean Rum Cask Finish pays tribute to the role of Irish Immigrants in the development of rum in the Caribbean in the 17th Century. Irish heart and Caribbean soul. We carefully select barrels previously used to age Demerara Rum to impart their distinctive tropical fruit flavours.