A 17 Year Old Single Malt that was initially aged in ex-Bourbon barrels for 15 years before being finished in a rare Japanese Mizunara cask for the final two years. The Glendalough 13 Year Old Mizunara Finish was this whiskey's predecessor and was named in the top 20 whiskeys in the world. This expression is limited to 6,000 bottles, each of which have been numbered individually.