The Macallan treated this 18 Year Old whisky to not just one, but two cask types for its maturation, released as part of the Double Cask series! Oloroso sherry was used to season a combination of both American and European oak casks, with the former imparting vanilla nuances while the latter brings that hallmark Macallan spice. Another fantastic sherried single malt whisky from the Speyside distillery!