How Make a Whisky-Walnut Cocktail

I am not claiming to be the Sentimental Gentleman. Not even a little. I am merely saying that I am a sentimental gentleman. I’m sentimental about it.

Let’s back up: The Sentimental Gentleman is a cocktail. It’s a terrific cocktail actually, a robust and resonant little autumnal sipper, composed of scotch whisky, the herbal French liqueur Bénédictine, and a (traditionally) Italian liqueur of green walnuts called nocino (“no-chee-no”). It was invented in 2012 by a…