Yellowstone Cast Member Reveals One Scene That Genuinely Disgusted Kevin Costner

Throughout its blockbuster four-and-a-half-season run, "Yellowstone" has helped make low-key celebrities of many a supporting actor — including several who had never acted before the show. Of that motley crew, few were less likely tabbed for screen stardom than Chef Gabriel Guilbeau, whom "Yellowstone" fans likely know better by his nickname, "Gator."

As it happens, the man who plays the Dutton family cook on the show is a cook in real life. He also serves as the head of craft services on the "Yellowstone" series. Given the show's reliance on tense family dinner scenes, it's fair to assume that Gator's role is pivotal to the Dutton family's success. But that doesn't mean that the job is always the easiest to do.

According to the chef's comments during a chat with Delish, preparing a moveable feast for the series' cast and crew — totaling over 300 people — can be tricky from one day to the next. That's particularly true since some of the cast are a little harder to feed — even headliner Kevin Costner. Gator deemed him "a very picky eater" — so much so that the chef claimed Costner was legitimately disgusted when he plopped a dish of grilled octopus down in front of his John Dutton character. Fans will recall the event from Season 2, Episode 3, "The Reek of Desperation," an episode that's filled with a rocky dinner as John tries to adjust to a life without his wife and have a semi-cordial conversation with his children.

"In no way, shape, or form would he ever eat the grilled octopus," Gator recalled. He noted that Costner's reaction to the dish was all the more authentic because the actor had no idea what the octopus would look like for the scene ahead of shooting. "I set this big sea spider down in front of poor Kevin Costner ... He gave me this look, and it was [a] genuine reaction that you see in the show of 'Gator, what the h*** is that?'" But Kevin Costner didn't say "h***" in the moment, dropping a full-on f-bomb in reaction to the octopus and promptly asking his dinner companions to send a plate of potatoes his way. Authentic as the reaction is, Costner's read on the scene makes for one of the funnier moments he's delivered in the largely laughless skin of John Dutton.

But even as Costner's dietary habits were played for laughs at the moment, Chef Gabriel "Gator" Guilbeau was quick to note those habits were not due to the actor adhering to some strict Hollywood diet. In fact, in Gator's opinion, quite the opposite might be true, with the chef stating, "Kevin Costner is a pretty difficult person to feed, mostly just because he's very simple. Simple ingredients and simple recipes, like bread pudding, are great."

Gator went on to add, "Before he met me, I think [Costner] solely may have lived off of canned chili and hot dogs," laughing that dropping a Mediterranean feast on the man was quite the ruse indeed. Nonetheless, Gator said Costner is always interested in what he's cooking up on set, particularly if that something errs on the side of sweet. It seems Costner is not the only cast member enamored with Gator's cooking either, with Ian Bohen, Denim Richards, and Jefferson White heaping praise on the man in multiple "Stories from the Bunkhouse" segments. And to hear those bunkhouse boys tell the tale, Gator easily ranks among the most important and universally beloved members of the "Yellowstone" team.

All five seasons of "Yellowstone" are streaming now on Peacock.