Grant's Ale Cask Finish

I have to say I'm pleasantly surprised by this whisky. In my reading on this, the whole idea of finishing in some type of ale or beer cask sounded interesting. I did not want to spend a ton on trying this out, and I doubted that any local pub in my area would have it behind the bar. At $20.00 it seemed like a go, and as Grant also owns Glenfiddich, and has an IPA finish, how could I loose? A sweet nose, green apple and pears, young, no trace of any hops, or anything close to it. You can feel the grain, but it almost effervescent? My mind must be playing tricks as to the ale, but I can feel it. Sweet with a very, very, slight puff of smoke at the end. Now the finish. He is where the ale kicked in, for me. The only way to describe it is that it reminded me of pouring a beer and getting a large foam head on it, then sucking in all the foam. There is that certain "foam" taste. That's it. I wondered how this would hold up in ice. It lost most of the fruit, but I still get that fizz, a little more ale in the back, and that finish is still there. I may just have to get another after this is gone.