Dewar's Japanese Smooth Mizunara Oak Cask Finish 8 Year Old is a blended Scotch whisky that is produced by the Dewar's distillery. The whisky is a blend of multiple single malt and single grain whiskies that have been aged for at least 8 years. The whisky is then finished in casks made of Mizunara oak, which imparts a unique flavor to the whisky.

The Dewar's Japanese Smooth Mizunara Oak Cask Finish 8 Year Old is bottled at a strength of 40% ABV and is said to have notes of honey, vanilla, and oak on the palate, with a long, smooth finish. It is recommended to be enjoyed neat or with a splash of water to bring out the flavors. The whisky has won numerous awards, including a Gold Medal at the International Wine & Spirit Competition in 2007 and a Double Gold Medal at the San Francisco World Spirits Competition in 2010.

In addition to the standard Dewar's Japanese Smooth Mizunara Oak Cask Finish 8 Year Old, the distillery also produces a number of limited edition expressions of the whisky, including the Dewar's Japanese Smooth Mizunara Oak Cask Finish 12 Year Old, which is aged for an additional four years, and the Dewar's Japanese Smooth Mizunara Oak Cask Finish 18 Year Old, which is aged for an additional ten years. These limited edition expressions often have different flavor profiles and higher proofs than the standard Dewar's Japanese Smooth Mizunara Oak Cask Finish 8 Year Old.