https://www.esquire.com/food-drink/restaurants/a48042/kfc-chicken-secret-recipe-revealed/
“That is the original 11 herbs and spices that were supposed to be so secretive,” Ledington said. (He would backpedal later.)
Here's how the recipe read on the document:
11 spices — Mix with 2 cups white fl 1) 2/3 Ts salt 2) 1/2 Ts thyme 3) 1/2 Ts basil 4) 1/3 Ts oregano 5) 1 Ts celery salt 6) 1 Ts black pepper 7) 1 Ts dried mustard 8) 4 Ts paprika 9) 2 Ts garlic salt 10) 1 Ts ground ginger 11) 3 Ts white pepper
Jones followed up with Yum! Brands, KFC's parent company, to check on the veracity of this recipe. They didn't confirm or deny, only saying, “Lots of people through the years have claimed to discover or figure out the secret recipe, but no one's ever been right.”