Alice Waters has been a hero of each of ours for a long time. Known most for her must-book-months-in-advance culinary treasure, Chez Panisse, she also is the force behind one of the most effective school garden projects, The Edible Schoolyard at Martin Luther King Jr. Middle School in Berkeley , where more than 4,000 visitors now pass every year. It was wonderful to have her introduce us today at the Ferry Plaza Farmers Market where Bryant demoed a couple of recipes from Grub.--Anna