Amaro Montenegro, an Italian digestif, brings strong flavors of orange to this pleasantly bitter cocktail. The drink starts out warm, with light, molasses-y sweetness coming through the first sip, but packs a pleasantly bitter bite. It's a touch smoky and delightfully strong. Finish it with a dash of grapefruit bitters, and garnish with a grapefruit peel twist.
Ingredients3 tablespoons (1 1/2 ounce) Jamaican rum (such as Appleton Estate Signature)