Making whiskey is an interesting process. After distilling the neutral spirits, they age the product in charred oak barrels. This is the case for all whiskeys, as far as I know. Bourbon, Scotch, even Canadian Whiskey.
But there is a slight drawback to this process. Because the barrels are naturally porous, esp. after being charred with fire, they let some of the ethyl alcohol escape. This is called the "angels' share". For this reason, they deliberately put it in the barrel at an usually high proof.
As I said, it can't be helped. It is simply a natural part of the process. My question is, How then do they make 40-year-old Scotch? Would basically ALL the alcohol evaporate, after 40 years? Or do they cheat, and re-blend it (blended Scotches are also a little cheaper, you know)?
Please let me know. Because if I ever save up enough money, I plan on buying a forty year old scotch. (BTW, do any of you know any sellers online? I'm serious.)