Double Double 37 year old is inspired by Dewar's deep history of double aging whisky and a relentless pursuit of innovation. Crafted by Dewar’s Master Blender and Worlds Best Master Blender, Stephanie Macleod, this unique blended malt whisky is a strictly limited-edition love letter to the smoothness created by our unique, four-stage ageing process, and it's also the latest in our collector’s series that celebrates scotch whisky's regions. This landmark whisky is finished in Oloroso sherry casks that held Aultmore single malt whisky from the region of Speyside.