Why isn’t a simple case of getting some crafty scientists to buy some Fried Chicken, analyse it, and determine what the eleven secret herbs and spices are? Surely that’s easy to do.
Same with some beverages - apparently only three people know the ingredients and recipe, and none of them may ride in the same plane together. But what of all the orders for “secret ingredient #4 - 15 tons”??
I can’t see how they can be kept secret.
“Waheeey! ‘Duck!’ Get it?”
“Duck! Sounds almost exactly like fu-”