The taste is extremely astringent in a very unusual, un-tannic way. It just leeches all the water from your mouth. A veritable Arrakis of whisky. Better put on my stillsuit. It's also very sharp but water tempers it well. Just be careful: too much water makes it a bit nasty.
Tasted blind. I guessed the country right, but had no idea this was a peaty cask.