Scotch malt whisky, and particularly peated malt, balance and work brilliantly with rich crème de cassis and full-bodied vermouth, helped by a generous...
The only Speyside I have is Aberlour A'bunadh, so I scaled back from 60ml to 45ml. I used Ardbeg Uigeadial, La Copa vermouth, a pretty dry cassis, and Jerry Thomas bitters as I so prefer them to Angostura. It's a drink where all the players are heavy hitters, but they support each other well. The finish is honestly never ending.