The Kitchen hosts celebrate Earth Day with recipes that use sustainable ingredients; the hosts demonstrate how to create an indoor vertical herb garden.

The hosts talk about buying used kitchen items and share their favorite ways to save money on family meals, including an easy slow-roasted pork shoulder.

The Kitchen chefs show off their Chicken Cacciatore, Vegetable Ceviche, Open-Faced Tuna Melt and Alex Guarnaschelli's Juicy Peach Melba cocktail.

Alex faces her biggest nightmares yet as chefs Kevin Lee, Taylor Frankel and Jonathon Sawyer return to defend their winning title.

Alex's friends and all-star chefs Geoffrey Zakarian, Rocco DiSpirito and Gabriele Bertaccini join an intense culinary competition to try and outcook her.

Alex Guarnaschelli competes against friends and rivals as chefs Michael Symon, Stephanie Izard and Jose Garces arrive to face their fellow Iron Chef.

Eric Adjepong invites three restaurant teams, consisting of an executive chef and sous chef, to take on Alex Guarnaschelli; judges Michael and Bryan Voltaggio.

Four chefs from one of host Guy Fieri's sister shows test their skills in two rounds of cooking chicken dishes for the competition.

A handful of all-star chefs competitively cook a farewell dinner for the original set before the game is moved to a bigger and better location.

Three cheese-obsessed chefs come to the Flavortown Market to create their tastiest cheese dinner for the judges to determine who will win the $10,000 prize.

Host Guy Fieri challenges four chefs to participate in a supermarket-themed culinary competition, and they must manage real life issues.

Host Guy Fieri challenges four chefs to participate in a supermarket-themed culinary competition, and they must manage real life issues.

Host Guy Fieri challenges four chefs to participate in a supermarket-themed culinary competition, and they must manage real life issues.

Host Guy Fieri challenges four chefs to participate in a supermarket-themed culinary competition, and they must manage real life issues.

Guy Fieri challenges the competitors to leave the plates and serve everything in a bowl; the returning champ takes on chefs Martel Stone and Evelyn Garcia.

Guy Fieri cranks up the chaos as the returning champ faces off against chefs Hanna Haar and Gustavo Romero in a nut-fueled challenge.

Guy Fieri invites chefs Maneet Chauhan, Christian Petroni, Adam Sobel and Stephanie Izard for a pizza showdown featuring a pizzeria combo plate.

Four chefs who fell short of victory around return for redemption, but first the Food Pyramid selects the whammy item and which aisles they can shop.