When I asked for the recipe, she was quick to tell me that it was a closely guarded secret! Canned pineapple and orange juices were mixed with two rums, which were generically labeled as "dark rum" and "light rum" in the recipes used by bars and restaurants.
Others believe that, despite the difference in ingredients, they taste quite similar.
It has proven to be effective, which is why it is most common striking base in the vastly popular, fast-growing sport of.