2 oz Dark jamaican rum
1/2 oz Lime juice
1/2 oz Ginger syrup
1 dash of Boker’s bitters
1 dash of Angostura bitters

Shake like hell with lot of ice and strain into a chilled glass.
This is a bit of a different take on a classic rum cocktail. Using ginger gives the cocktail a bit more complexity and depth.
Loved it, thanks to Flamingo Fred for the tip!