Dewar’s 8-Year-Old Caribbean Smooth Rum Cask Finish Blended Scotch Whisky is an exciting new blend and the first in an innovative cask series from the iconic whisky maker. Crafted from 8-year-old blended Scotch whisky – double-aged and finished in casks that previously held Caribbean rum for a pleasantly unexpected Caribbean smooth and tropical flavor – Dewar’s Caribbean Smooth is an invigorating new blend bringing together two seemingly different worlds: Scotland and the Caribbean.