De Kuyper Curacao Liqueur Triple Sec 500ml The Triple Sec recipe dates back to the early 19th century and has been copied and altered ever since. De Kuyper also took a shot at the infamous cocktail seasoning, pronouncing the citrus and prolonging the taste. By distilling the dried peels of sweet and bitter oranges, and mixing the two flavours meticulously together, they came up with this one of a kind liqueur.