Yes, V. Sattui Winery, in St. Helena, makes great wines, but on bright and beautiful days, the real attraction is its deli and marketplace, where visitors can purchase all sorts of items to furnish a picnic and post up to eat at any number of picnic tables out front. The 2.5-acre picnic area is open to the public, and tables are available on a first-come, first-served basis. As for the yummies, choose from a range of prepared sandwiches, salads, salumi, and 200 types of cheese, or piece together an antipasto with salami, cheese, olives, and fresh bread. On weekends, in summer, Italian chef Stefano Masanti takes up residence (his Michelin-starred restaurant in the Italian Alps is only open in winter) and turns out perfect wood-fired pizzas. Go early to avoid big crowds.