Coca-Cola keeps its formula in a locked vault. KFC maintains its mysterious, top-secret 11 herb-and-spice blend by producing half of the recipe in one laboratory, and half in another. And, apparently, only two monks know the exact combination of the 130 herbs that make up Chartreuse.
And then there’s my mom, one of the worst secret-keepers in culinary history. Any time she describes her pièce de résistance—creamy, comforting Creole red beans and rice—she divulges the “secret” ingredient that flavors each addictive spoonful: pickle juice.
Source: FS – All – Food – News
Red Beans & Rice With a "Secret" Ingredient (That Everybody Knows)