Basically, a Negroni with bourbon replacing gin. The original 1927 recipe calls for equal parts, but I've previously favoured a 3:2:2 (45ml bourbon, 30ml...
I cannot imagine why I only gave this 4½ stars. Bulleit, Cocchi and Campari, with the addition of 10 ml. Cherry Brandy (Bold London Spirit and Dutch syrup at a ratio of 3:1) and a few drops of Orange Bitters, all go down a real treat at this time of the year, especially in a Nick & Nora.