Shellback Stormy Seas

Recipe Courtesy of Shellback Caribbean Rum 

1½ oz. Shellback Spiced Rum

1/4 oz. coffee liqueur

1 oz. ruby-red grapefruit juice

3 oz. ginger beer

1 lime wedge

Build ingredients in a highball glass over fresh ice, squeezing the lime over the cocktail before dropping it in and serving cold.