There’s nothing more intriguing than a closely guarded secret recipe. Coca-Cola and KFC are two famous examples, with the precise ingredients for the soda syrup and special coating kept in guarded vaults: the story is that those who hold the information aren’t allowed to travel on the same plane in case of disaster. Lea & Perrins, Angostura Bitters and Chartreuse all keep their products’ make-up secret.
Making sure the butter is the brightest of greens is as important as any of the individual components
Nobody knows the recipe for oysters Rockefeller – or at least nobody knows the original recipe. It was created in 1889 at Antoine’s restaurant in New Orleans, which still stands today, serving the same classically French food it did back in the 19th century. It came about because the chef – Jules Alciatore, son of the eponymous Antoine – discovered there was a shortage of snails for an hors d’oeuvre, and used oysters in their place.

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