World renowned chef Thomas Keller is now offering picnic lunches out of a shack in Yountville. Addendum, set in the backyard of his Ad Hoc restaurant, opened on June 30 and operates each Thursday through Saturday from 11 a.m. until the food runs out. There are currently two choices on the menu, Ad Hoc's signature buttermilk fried chicken and mesquite barbecued Wagyu beef brisket, and each is priced at $16.50. Click through our gallery to see the food and garden picnic setting. [The Feast]