2 1/4 oz. white rum
1/2 oz. triple sec
3/4 oz. blue curacao
dash angostura bitters
dash gin
dash grenadine
5 oz. ginger ale
Directions:
shake with ice, pour into a collins glass. garnish with cherry. This is mentioned in the book The Hitchhiker's Guide to the Galaxy by Douglas Adams. His recipe calls for slightly more exotic ingredients.