Kentucky Fried Chicken (KFC) is a fast food restaurant chain and has its headquarters in Louisville, Kentucky. It was founded by Harland Sanders in 1930.
Sanders Original Recipe that is said to contain '11 herbs and spices' is one of the most famous trade secrets of the food industry.
A copy of the recipe, signed by Sanders, is kept in a safe inside a vault in KFC's Louisville headquarters, along with 11 vials containing the recipe's herbs and spices. It is guarded round the clock.
Only two people in the entire organisation know it in its entirety.
A newspaper report once called the secret recipe as one of the company's most valuable assets.
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