Sitarski
1 1/2 oz. Dark Rum
2 oz. Grapefruit Juice
1 tsp. Lemon Juice
1/2 oz. Lime Juice
1 tsp. Sugar
Special instructions:
In a shaker half-filled with ice cubes, combine all of the ingredients. Shake well. Strain into an old-fashioned glass almost filled with ice cubes.