The final challenge is biome cakes: rainforest, desert or coral reef.

Five kid bakers craft gingerbread house cakes for a baker's dream prize.

A dessert made with lemon curd spells success for one aspiring young chef.

Strange bagels make an appearance in these teen chefs' appetizer baskets.

Teen chefs face an entree basket that contains a giant milkshake.

Rachael and Guy mentor rising young chefs who hope to win a Web series.

Rachael and Guy coach their teams on a critical element: timing.

Rachael and Guy test the kids on their ability to create food mash-ups.

Twenty-four of the country's worst home cooks come to New York City.

The recruits learn fundamental knife skills at Arirang Hibachi Steakhouse.

The chefs illustrate the importance of flavor with a "blank canvas."

Anne and Alton welcome 16 of the worst cooks in America to boot camp.

The recruits tackle indulgence, making mozzarella and craveable dishes.

Boot camp is transformed for a Chinese New Year celebration.

The recruits get sophisticated, learning to make crepes and cooking duck.

The recruits learn to make burgers and tackle Southern tailgating staples.