In 2002, Bruichladdich's master distiller Jim McEwan decided he wanted to create the peatiest whisky in the world, adding Octomore to its range range of unpeated (Bruichladdich) and very peated (Port Charlotte) whiskies. In addition to its extraordinary phenol content, Octomore is also characterized by an innovative approach to the blending and ageing of these spirits.

Octomore 8.1 Masterclass is an edition produced with barley peated to 167 ppm. Unlike previous editions released as 5 year olds, it is matured for 8 years in bourbon casks from Buffalo Trace, Clermont Springs, Four Roses, Heaven Hill and Jack Daniels. A limited edition of 42,000 bottles.