You cannot use a different brand of rum and call it a “Dark ‘n Stormy” as it is registered as a trademark of Gosling Brothers Limited. You can make whatever you want. But if you want the real thing, the real flavors all coming together, and what not only legally patented but what no other ingredients can create, then try it to see what you think. I’ve looked at different recipes. The official way is to layer the drink over ice – floating the dark rum to make it look like a storm cloud, and garnishing with a lime wedge. Pretty cool to look at, far better to taste. I like the flavor of lime in mine, squeezing in the wedge, and stirring it all up so I get the same taste from beginning to end. I make the authentic way from time to time, but simply prefer the three flavors over two.
Dark 'n Stormy 2 oz Gosling's Black Seal 4 oz Gosling's Stormy Ginger Beer 1/4 oz fresh lime juice (one wedge)
Shake the rum and lime juice with ice. Strain into an old-fashioned glass (chilled), and add the ginger beer. Add more ice to fill glass. Stir gently.
You can simply squeeze a lime wedge in after stirring the rum and ginger beer to get just about the same thing. The amount of juice depends on how much each lime will give. I prefer to measure out everything to get the exact flavor balance each time.
Another thing, ginger beer is not ginger ale. You might have heard this before. I like ginger ale, but usually by itself. Ginger beer however is another thing entirely, so much stronger, so much more flavor. Not everyone gets into ginger. The first time I tried a Jamaican brand (D&G), and coughed from the surprise. All I had ever known was ginger ale. It takes only a first taste to know the difference, a palpable difference.
If you cannot find any or either of the ingredients, a dark rum and ginger beer will work. I have tried it Myers’s Dark & D&G and enjoyed the flavors immensely, yet knew it was different from what I genuinely believed a better drink. Not to take away from the respectability of Myers’s rum or the fine products of D&G, which I do not wish my bar to ever be without. Nonetheless, a Dark ‘n Stormy is one of my favorite drinks.