It's a sunny day at the Pasadena Farmer's Market, where well-seasoned chefs Jodie Taffel and Jennifer Vela cook off against the young guns Ben Diaz and Ivo Knehnetsky. First, these chefs pucker up and sample classic Californian citrus in the Flavor of the Market Challenge. Then, they must Feed the Market by creatively revamping a Southern California staple - avocado!