The KFC menu item Colonel Sanders hated became one of the chain’s biggest staples

Colonel Harland Sanders may have built Kentucky Fried Chicken into a fast-food empire, but there was one popular menu item he reportedly couldn't stand.

After selling what is now known simply as KFC to a group of investors in 1964, Sanders remained the company's public face and spokesman and often voiced concerns about changes to the restaurant's food, according to food publication The Takeout.

One of his biggest complaints was the chain's gravy.

FAST-FOOD MENU ITEMS THAT CHEFS...