8 tsp. (1⅓ oz.) aged rum, such as Railean Small Cask Reserve Single Barrel Rum
4 tsp. (⅔ oz.) chilled espresso
2 tsp. coffee liqueur, such as FAIR Café 1 tsp. Frangelico ½ tsp. allspice liqueur, such as The Bitter Truth Pimento Dram Coffee beans, for garnish
Combine rum, espresso, and liqueurs in a cocktail shaker half filled with ice. Shake vigorously until well-chilled and frothy. Strain into a cocktail glass. Garnish with coffee beans.