A nouvelle Italian bistro in a lovely Foothills setting, Vivace has long been a favorite with Tucsonans. Wild mushrooms and goat cheese in puff pastry is hard to resist as a starter. The fettuccini with grilled salmon is a nice, lighter alternative to such entrées as a rich osso buco. For dessert, the molten chocolate cake with spumoni is worth the 20 minutes it takes to create. Patio seating, with either city or mountain views, is especially inviting on warm evenings.