Ice
2 ounces white or golden rum
4 ounces pineapple juice
1 ounce cream of coconut (from a 15-ounce can)
1 ounce coconut milk (from a 13.5-ounce can)
Fill a glass with ice. Place rum, juice, cream of coconut, coconut milk, and 1 cup ice in a shaker. Shake vigorously until outside of shaker is frosted and cold, 30 seconds. Pour into glass.