Duncan Taylor's The Octave range showcases whisky that has spent years ageing in octave casks, which are approximately 1/8th the size of a butt and yield around 80 bottles. That means these cask-strength whiskies have had some of the most intense, lengthy sherry maturation on the market with a limited number available. In the case of this Glentauchers 26 Year Old from 1996, it was bottled at a natural cask strength 51.7% ABV, with a total outturn of only 58 bottles.