Jamaican Rum Bamboozle

2 oz dark rum
2 oz Jamaican dark rum
2 oz light rum
1 dash bitters
1 splash grenadine syrup
3 oz pineapple juice
1 slice mango
1 oz coconut extract

Pour small amount of bitters over ice, strain, then add all the rum. Throw in pineapple juice, coconut extract, and a splash of grenadine, with a thin slice of mango for garnish.