Adapted from a recipe used at the Larchmont Yacht Club, Larchmont, New York
- 1 ounce Mount Gay rum
- 1 ounce Myers's rum
- 1 1/2 ounces fresh lemon juice
- 1 ounce simple syrup
- Club soda
Pour all of the ingredients except the club soda into a mixing glass two-thirds full of ice cubes. Shake well. Strain into an ice-filled Collins glass. Top with the club soda, and stir briefly.