Goslings Black Seal Goslings Black Seal of Bermuda is one of the best dark rums I have ever had. It is a great mixer as well as an occasional sipper. The flavor is strong with perhaps a hint of vanilla or something similar. Wedge's Rum and Coke 1 1/2 oz Goslings Black Seal 1 oz Captian morgan spiced 1 can or bottle of coke (no plastic bottles or fountain coke) Fill tall glass with ice and add rums. Add Coke (more or less for desired strength) Add lime wedge as an option if you like.