KFC has boasted many items endorsed by the restaurant's original founder, Colonel Sanders.

As much as the legendary spokesperson for the famous fast food brand loved KFC's famous fried chicken, however, the good colonel didn't mince words when it came to criticizing one item he famously despised.

According to Fox News, Sanders once revealed to the Courier-Journal of Louisville, Kentucky that he couldn't stand KFC's gravy.

"My God, that gravy is horrible," Sanders bluntly said.

In his assessment, Sanders likened the famous brown gravy served at the fast food empire to "wallpaper paste," saying that he was surprised KFC even sold it in the first place.

"They buy tap water for 15 to 20 cents [per] 1,000 gallons, and then they mix it with flour and starch and end up with pure wallpaper paste," Sanders said.

"There's no nutrition in it, and they ought not to be allowed to sell it," the restaurant founder continued.

The colonel's complaints came in 1978, roughly 15 years after Sanders sold KFC to a group of investors. As more and more franchises opened across the nation, Sanders remained onboard as the brand's public face, even as he expressed continued reservations about some of the chain's new menu additions.

Nowadays, KFC's gravy has become something of a staple associated with the iconic fast food franchise. An ideal side dish perfect for mashed potatoes and the brand's signature fried chicken, many fans view it as the ultimate comfort food on KFC's menu.

In spite of its favored status among longtime fans of the brand, however, Sanders maintained his avid dislike for the brand's gravy throughout his life.

Interestingly, his comments to the Courier-Journal were so severe, one KFC in Bowling Green, Kentucky filed a lawsuit against both Sanders and the newspaper. Ultimately, the lawsuit was thrown out due to Sanders criticizing all nationwide KFC locations, rather than the Bowling Green restaurant in particular.