Speyside 17 (M) is a 17 year old cask strength, Single Cask Whisky from Signatory Vintage.
What is known about the mysterious (M) is that is with 99.999% certain that this cask is from one of the most sought after distilleries in the world, M**allan. Rarely will one get to try a cask strength from this distillery, and even more rare a single cask. Only 625 bottles were released worldwide.
