Kogi; Southern Food; Beer, Cheese and Rock 'n Roll

People become vegetarians for many reasons.  Author Jonathan Safran Foer explains why he gave up meat.  Evan George and Alex Brown call themselves the Hot Knives.  They share the secret to pairing beer with cheese and music.  Gourmet food trucks are all the rage in Los Angeles. But the city of Portland did it first.  Teri Gelber tells us how the Northwestern city does street food.  Javier Cabral sorts out his favorite food trucks in Los Angeles.  We visit with the man behind Kogi Korean tacos, Roy Choi.   Plus a trip to the company that started the gourmet food truck craze, Roadstoves.  Matt and Ted Lee say that Southern food has changed.  They explain how it's been updated.  Richard Shea takes us into the world of competitive eating.  And Laura Avery reports from the Santa Monica Farmers Market.