Also known as the Rolls Royce of single malt whisky, The Macallan 18 Y Double Cask is one of the more luxurious whiskies this distillery has to offer. It’s treated to not one, but two cask types for maturation. American and European oak casks were seasoned with Oloroso sherry, each of the two cask types imparting their own special characteristics on The Macallan 18 Y Double Cask.