Dewar’s today is noted for being the fifth largest blended Scotch whisky brand in the world and top selling Scotch whisky in the US. Dewar’s first took hold in the States in the late 19th century, thanks to relentless advertising and pre-Insta celebrity endorsement. They’ve been on a growth trend ever since (with a short break for that whole Prohibition business).

As part of a recent release Dewar’s unveiled not too long ago a trio of 500mL bottles: the Double Double Series. These expressions were initially available only in global travel retail shops and result from an extremely laborious process. Dewar’s is known for double aging, the technique of bringing their grain and malt whiskies to maturity, blending them together and aging that resulting whisky again.

Current Dewar’s master blender Stephanie Macleod took it up a notch with the new collection. In the four-step process, various malt and grain whiskies come of age, and then like is blended with like. The separate blended whiskies are aged again for about six months.

“We then blend the grains and the malts together and put them back into [neutral oak] casks and back into the warehouse,” said Macleod at the time. “Then we put the whiskies into three different types of sherry cask. They then rest in said casks for up to a year. For this line up a 21 year gets Oloroso, a 27 year the mysterious Palo Cortado and a 32 year a sweet Pedro Ximénez.