KFC might carefully guard the 11 secret herbs and spices in its fried chicken recipe, but Goo Systems harbors 19 top-secret ingredients in its projection-screen paint. Take that, Colonel Sanders.

The handwritten recipe that launched a fast-food dynasty and made Col. Harland Sanders world famous is locked away at KFC headquarters — its contents so concealed that not even the chain’s top executive knows the ingredients.

KFC, also known as Kentucky Fried Chicken, is a chain of fast food restaurants based in Louisville, Kentucky, known mainly for its fried chicken. KFC has been a wholly owned subsidiary of Yum! Brands since 2002.The company was founded as Kentucky Fried Chicken by Colonel Harland Sanders in 1952. The company adopted the abbreviated form of its name in 1991. Starting in April 2007, the company began using its original appellation of Kentucky Fried Chicken again for its signage, packaging and advertisements in the United States as part of a new corporate re-branding program; newer and remodeled restaurants will have the new logo and name while older stores will continue to use the 1991 signage. Additionally, the company continues to use the abbreviation KFC freely in its advertising. Internationally the company is still known as KFC.KFC primarily sells chicken, in form of pieces, wraps, salads and sandwiches. While its primary focus is fried chicken, it also offers a line of roasted chicken products, sides and desserts. Outside of North America, KFC offers beef based products such as burgers or kababs, pork based products such as ribs and other regional fare. The popularity and novelty of KFC has led to the general formula of the fried chicken fast-food restaurant being copied by restaurant owners worldwide.