Bushmills Causeway Collection Cuvée Cask is another edition in the Causeway Collection. This time The whiskey matured for 8 years in selected Oloroso sherry barrels and in ex-Bourbon barrels. The single malt then received a delightful 2 year finish in exclusive Cuvée barrels, used initially for the first fermentation of champagne. Coloring and chill filtration omitted. The Bushmills 10 year Cuvée Cask is limited to 7,000 bottles, bottled at it’s natural cask strength of 54.8%.