Cesar Gonzalez is an expert in Mexican cuisine and his Fish Tacos are the most authentic that you'll find anywhere in the world. His tasty tacos have earned his restaurant, Mama Testa, numerous awards and top reviews from magazine, newspaper, internet and TV critics. Cesar opened his restaurant with the goal of bringing time honored, classic Mexican recipes to the people of San Diego and he's had unprecedented success. Cesar's pride in his Mexican heritage will be put to the test when his Mexican Independence Day celebration is interrupted by a Throwdown with Chef Flay. Cesar's Fish Tacos are technically perfect, but Iron Chef Flay is putting his own twist on the dish and flying all the way to the west coast to beat Cesar at his own game.