Bunnahabhain 43 Year Old - Director’s Special The Single Malts of Scotland70cl 41. 4% A single cask release of Bunnahabhain from the Single Malts of Scotland, bottled as part of the Director's Special range. This was distilled back in 1975 and aged for 43 years in a single refill bourbon hogshead. Over the years, its strength has naturally dropped, concentrating its flavour. The result is a soft and fruity whisky that shows the delicacy of Bunnahabhain's normally boisterous spirit.