Simply add ice cubes to your Mason Jar, pour in the ginger beer, then add 50ml of Gosling's Black Seal Rum, which settles on the top like a Dark 'n Stormy cloud. Add a squeeze of lime & drop in the lime wedge (optional). Sip & enjoy! The Dark 'n Stormy was discovered by the British Navy in Bermuda over 100 years ago, who made their own ginger beer & wanted to ' Spice' things up a little by adding the local Gosling's Rum. The drink took its name from the colour of a cloud that a mad sailor would dare sail under. This cocktail has since been trademarked which is unheard of in modern times. In the old days they would mix up a Dark 'n Stormy in whatever container they could find, most often an old jam jar & for the legions of Dark 'n Stormy fans out there we are now offering you the opportunity to recreate that in your own home.