Dark N Stormy★ ★ ★ ★ ★(491 ratings) Tweet this Recipe Share on FacebookPrep: 1 minMaking: 1 minTotal: 2 mins Serving: 1 cocktailHow to make a Dark n Stormy Ingredients Dark Rum 45ml / 1.5oz. Ginger Beer 100ml / 3.4oz. A slice of lime Recipe Add Ice, Dark Rum, and Ginger Beer to a Old Fashioned Glass. Garnish with a slice of lime.