Food scraps are used in each round, beginning with herb stems and the remnants of a filleted fish for appetizer recipes. For entries, the chefs must work with potatoes that have eyes; and desserts are made with discarded oranges and bread.

Chefs, who operate food trucks, compete. First, they are forced to use flavored meats in their appetizer dishes; and later, they must use a sugary powder and a leafy vegetable in their entrées; and guanabana-flavored ice cream for dessert.

Sports stars Danica Patrick, Tiki Barber, Chuck Zito and Natalie Coughlin compete for charity. Included: appetizers are made using salmon; chocolate-covered marshmallows cause stress when preparing entrées; and olive-oil cakes must be transformed. Written by anonymous

Four extraordinary chefs, who serve their communities with their talents, compete. In the appetizer round, they are given chicken soup and barbecue sauce; and for entrees, they must combine scallops with two unusual produce items.

There's nothing but leftovers for the chefs in all three rounds. First, they are tasked with transforming the remains of a casserole and uneaten takeout food. In the entrée round, the ingredients are something soggy and something sweet.

It's chicken, chicken and more chicken in the baskets for these chefs.

The chefs receive calves' livers and ranch dressing in the first round. Then in the entree round, a small bird and a citrusy spice make for an interesting combination. And will hot sauce be a hit in the finalists' desserts?