Kilkerran 16 Years will be the oldest expression so far. It is a combination of 98% ex-bourbon casks and 2% Madeira casks.
Nose: similar to the 12 Years, really, more than just the same DNA. The same combination of minerals, lemons, digestive biscuits and earthy notes. Linseed oil, herbs. What I recognize from the Madeira cask is the slight sour edge. If I’m forced to pull them apart, I’d say this 16 Years is brighter, slightly grassier (bourbon wood) and slightly more floral. More zesty citrus and lacking the slightly winey sherried touch that you get in the younger version.