A Dark 'n' Stormy is a highball cocktail made with dark rum (the dark) and ginger beer (the stormy) served over ice and garnished with a slice of lime. Both Gosling's Black Seal Rum and Barritt's Ginger Beer are made in Bermuda.
2 ounces Gosling's Black Seal Rum
3 ounces Barritt's Ginger Beer
1/2 ounce fresh lime juice (optional)
Lime wedge for garnish
Build the ingredients in a highball glass filled with ice cubes.