Dewar's 12 Year Old Blended Scotch - Dewar's 12 Year Old Blended Scotch is a direct descendant of the signature Blended Scotch Whisky introduced over a century ago. This whisky was created by our previous Master Blender Tom Aitken to introduce the first permanent product to our premium Blended Scotch Whisky range. Considered as “double aged”, this whisky spends an extra six months more after being mixed together in their barrels to marry the blend perfectly.