1 ounce aged dark rum, preferably Jamaican
1 ounce aged Martinique rum
1/2 ounce orange curacao
3/4 ounce fresh lime juice, lime shell reserved for garnish
1/2 ounce orgeat (almond-flavored syrup)
1 mint sprig, for garnish
Fill a cocktail shaker with crushed ice. Add both rums, the curacao, lime juice and orgeat and shake well. Pour the drink unstrained into a chilled double rocks glass and garnish with the lime shell and mint sprig.