This 21-year -old Double Double Dewar's with a Four Stage Ageing Process for Ultimate Smoothness where two parallel batches of single malt and single grain whiskies are aged and blended on their own before finally being married together was released by Master Blender Stephanie Macleod in 2109.Finished in Oloroso Sherry casks, giving the whisky “subtle notes of cinnamon and ripe vine fruits with a silky smooth finish”.