What kind of rum is in your pina colada? It better be Don Q, the top selling rum in Puerto Rico, where they know about rum (more than 70 percent of the world’s rum is produced on the tiny Caribbean island). What makes it so popular remains a mystery (it could be the secret formula, which allegedly includes water from a river that winds through Puerto Rico’s volcanic region). Or maybe It was the creation of the pina colada, allegedly first poured 1954 by bartender Ramon "Mochito" Marrero, and made with Don Q. Whatever the case, the brand is still going strong almost 200 years later. Let's go back to the beginning.