Chef

Jon Favreau did his own cooking by training with a food truck chef Roy Choi. Choi sent Favreau to a week-long intensive French culinary course, where Favreau honed his knife skills and learned to make sauces. "I brought him into the kitchen and he just kind of fit in," Choi recalls. "I threw him a couple of tests, like a case of chives, or a case of onions, or peel two cases of avocados. To see where his mind, his situation, and his abilities were, and how interested he was in these things. He just attacked them. He really became a part of it." Five years after this film's release, Favreau and Choi reunited for The Chef Show (2019), a cooking/documentary series on Netflix.

When Percy creates Carl's Twitter account they settle on the name @ChefCarlCasper. Yet Carl's very first tweet, which he thought was a private message to Ramsey Michel, was shown to have been posted by @CasperCarl. For the remainder of the movie his Tweets correctly identified him as @ChefCarlCasper.

Near the end of the credits, there is a brief scene of chef Roi Choi teaching Jon Favreau how to make the perfect grilled cheese sandwich.