“That kind of behavior doesn’t make a great chef. It holds them back,” agrees Andrés, 55, a Spanish American chef and restaurateur known for his humanitarian work.

“Yes, Chef!” will put 12 professional chefs to the test, judging not only their cooking skills but their ability to work together and keep their egos in check as they complete high-stakes culinary challenges.

The chefs have all been nominated by their coworkers, bosses, friends or family.

“These rising stars all have natural talent, but their egos, intensity, stubbornness or short fuses are holding them back from reaching their full potential,” according to an NBC release about the new series.

Week after week, contestants must prove they can keep their cool and work together, even as the competition heats up.

“In our kitchen, it takes a lot more than good food to win,” Stewart says in the preview clip.

The Emmy-winning lifestyle maven is also shown sharing a vulnerable moment with one of the contestants.