How do you make a legal Dark 'N' Stormy cocktail?

There are two trademarks on file with the US Patent and Trademark Office that states that the following recipe must be used in order to be considered an actual Dark 'n" Stormy: * 2 ounces Gosling's Black Seal rum Legally ONLY Gosling's Black Seal may be used for this drink to be called a Dark 'n' Stormy * 4 ounces ginger beer * optimal lime slice as garnish # Take a highball glass filled with ice # Pour in rum # Top off with ginger beer and garnish This drink was invented in Bermuda after WWI.