Finally, the blended whisky undergoes a fourth stage of finishing in Mizunara oak casks for up to a year.” Bottled at 46 percent ABV, Dewar’s Double Double 21 Year Old Mizunara Oak Cask Finish ...

blended together, and then aged again in casks. That blend is then finished in different types of barrels, ranging from Japanese mizunara to sherry butts to the specially toasted French oak casks ...