In the San Francisco area, there is a restaurant serving fava beans for your scientific sampling. Left Bank in Larkspur offers at least three vegetarian options, served in a lively brasserie setting. The most popular item is a medley of at least 10 steamed and sauteed summer vegetables (snap peas, asparagus, fava beans, green beans and whatever else is in season). Bow-tie pasta is tossed with summer vegetables, basil, olives and tomatoes. ``Croque Jacques Pepin'' is a delicious sandwich of roasted eggplant, fresh and sun-dried tomatoes and mozzarella (optional) on a potato bun. -- Left Bank, 507 Magnolia Street, Larkspur; (415) 927-3331. Prices: $$. Open for lunch and dinner daily. Don't forget to ask for a doggie bag!<g> John Cottingham "KNOWLEDGE is of two kinds: we know [log in to unmask] a subject, or we know where we can OR find information upon it." [log in to unmask] Dr. Samuel Johnson