Colonel Sanders' nephew may have revealed the 11 secret spices
This is from a family scrapbook owned by the nephew of Sanders. The nephew used to work for his uncle and says that he used to mix these herbs and spices for the original diner. He says they're the original 11 herbs and spices. Yum! has responded to the story saying the list is inaccurate.
In the article the nephew describes a bit more about the original preparation method using a pressure cooker.
I want to give it a try.