The East Bay is rich with farmers' markets, offering fine produce and fresh air year-round. To those Grand Lake adds a blend of old-time community and the stunning diversity of Oakland. On the right summery Saturday, you might glimpse utopia: people of every age, color, and sensibility tasting peaches, basking in the sunshine, and stuffing their reusable grocery bags with healthy vegetables whose purchase supports local farms. Diversity rules the stands as well; they offer a wide selection of produce, including gourmet heirlooms like Ronde de Nice zucchini and Viking Purple potatoes, both from Happy Boy Farm. Other stands sell specialty honey, milled grains, all-natural soaps, orchids, sustainable meats, nutmilks, and, of course, Oaklandish shirts. For lunch on the lawn, try the vast array of prepared foods, from Afghan to vegan soul, and round off the meal with coffee from the bean gourmand in the Hawaiian shirt, or one of Charlie Frank's "It Tastes So Good, It Makes You Selfish" pies. The kiddos can score a pony ride or romp in the bounce house.