It's a Douglas Laing Old Malt Cask 1979 Port Ellen, 25 Years. 50% ABV.
Now I'm not a Jim Murray type of reviewer so I'll first provide my initial reaction
Okay, that was something. It reminds me a bit of a Cragganmore with Oomph. For an islay, it has little of the peat or smoke I'd associate with an islay. There is a floral aspect to it, but overall an amazingly balanced whisky. The finish is the same as how you felt after your first (good) kiss.
Easily one of the best whiskies I've ever tried. I'm extremely thankful that my friend is willing to share.

