To make a proper Dark & Stormy you have to use Goslings Black Seal rum and you absolutely have to use Barritts Ginger Beer (from Bermuda).

Goslings is the official rum in the trademarked Dark N Stormy cocktail Fill a Glass with ice & Ginger beer, top with 50ml Goslings Rum Black Seal has a rich, intricate flavour, well balanced and nuanced with butterscotch, vanilla and caramel. The Barritts really makes a difference. The iconic rum has been produced in Bermuda since 1806, which is a pretty long time.

In those drink you mentioned they do make a difference. Some take a few different kinds; dark rum, light rum, navy strength etc.

Gosling’s Black Seal Bermuda Black Rum is a unique blend produced by Gosling brothers of Bermuda. Gosling's Black Seal rum - rated #2624 of 9501 rums: see 367 reviews, photos, other Gosling's rums, and similar Dark rums from Bermuda Gosling’s Black Seal combines rums from both pot and continuous column stills. Goslings or Kraken for dark and stormies, corn and oil etc. The name comes from the black wax that was originally used to seal the bottles, but now there’s an actual black seal on the label. Aromas of sweet caramel, molasses and dried fruit are followed by the taste of molasses, liquorice, cinnamon and … Any good drain cleaner will serve as an adequate alternative to Bacardi 151, provided you are using it for cleaning your drains. When asked if someone might substitute another rum for Black Seal, Henry looks as if he’s short-circuiting, finally stammering, “It would be impossible. Gosling’s Black Rum is rich, smooth, and full-bodied.

Spring ’n Stormy A refreshing take on the Dark ‘n Stormy ® adding some fresh Strawberries and Jalapeno for heat! Rich, smooth & full bodied, Black Seal rum is a unique blend by Gosling Brothers of Bermuda, the original recipe being a closely guarded family secret that has been handed down over many generations. If you have a hard time finding Barritt's, Bundaberg's ginger beer makes a great substitute. Oh, and you must add a wedge of lime. For mai tai, zombie, navy grog you probably want non black strap. Rich, smooth & full bodied, Black Seal rum is a unique blend by Gosling Brothers of Bermuda, the original recipe being a closely guarded family secret that has been handed down over many generations. True rum entuisiasts agrees that it's not a real Dark 'n' Stormy if it's not Gosling's Black Seal and Barritt's Ginger Beer - a creamy and delicious cocktail. Goslings Black Seal rum is flavourful dark rum which is ideal for mixing, most famously with ginger beer to make Goslings' signature Dark 'n' Stormy cocktail.

You can now buy Barritts in a 4-pack in most beverage centers in the US.

The original recipe is a closely guarded family secret that has been handed down for over four generations.

Gosling’s Black Seal Bermuda Black Rum.