Three chefs remain, but only one can survive to face the Gauntlet. The Chairman's Challenge narrows the field by forcing the chefs to adapt when they get to choose two difficult ingredients for their competitors to create one unified dish. Then, the two remaining chefs head to the Gauntlet Kitchen for their last Secret Ingredient Showdown, and judges Iron Chef Cat Cora and Rocco DiSpirito decide who has the chops to enter the Gauntlet.

The last chef standing faces almost insurmountable odds when they must cook their way through the three-round Gauntlet against Iron Chefs Alex Guarnaschelli, Stephanie Izard and Michael Symon. But in a surprise twist, the Chairman allows the challenger to decide which ingredient they'll battle each Iron Chef with, and judges Donatella Arpaia and Marcus Samuelsson decide whether the competitor leaves in defeat or joins the coveted ranks of the Iron Chefs.