When Stewart and Heidi Woodman opened Birdhouse in Minneapolis, they put sustainable grains and vegetables at the menu's forefront. For the restaurant's hearty farro salad, executive chef Ben Mauk employs a trio of green--peas, leeks and pistachios--to leaven the nutty grain. The result is a robust dish laced with flavor, ideal for a summer picnic. At the restaurant, Mauk offers a roast leg of lamb as an addition to the salad, turning it into a full-blown dinner. At Birdhouse, grains reign, but there's no bird food in sight.