Place rum, Amaro Montenegro, vermouth, and bitters in a cocktail mixing glass filled with ice. Stir until very well chilled, about 30 seconds. Strain into a rocks glass filled with ice. Top with grapefruit peel twist, and serve.
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.
Ingredients
1 1/2 ounce rum
1 ounce Amaro Montenegro
1 ounce sweet vermouth
1 dash grapefruit bitters