Exclusively released for the Irish Whiskey Collection, there are only 678 bottles of the 27 year old Bourbon Cask available. The 27 Year Old Bourbon Cask is a limited edition rare, cask strength (52.1 % ABV) and non chill-filtered Irish single malt. It represents the next bold step for Bushmills, one that honours the giants and generations before us and the incomparable natural landscape in which its forged.