Peace, Love & Chow:  Berkeley's Gourmet Ghetto is really a state of mind. On the one hand, it's the section of Shattuck Avenue bordered by Rose Street on the north and Hearst on the south. On the other, it's an approach to life (and to food, which is probably more important to a true Gourmet Ghetto-ite) in which the pursuit of quality is absolutely uncompromising. Every bit of food must be well chosen for the dish, at its peak of flavor, organically grown (preferably by a small grower persona...