We're taking a road trip this week, to the Martin Luther King Jr. Middle School in Berkeley, California, home of the Edible Schoolyard. It's a program begun by Alice Waters of Chez Panisse fame, an effort to teach children about food, culture, and the earth, with a garden that was started in their schoolyard. Jane and Michael Stern take us to Quechee, Vermont, for stellar roast corn with a secret ingredient.