Die-hard fans of über famous chef Thomas Keller can once again rejoice.  Bouchon Bistro in Beverly Hills is bringing back the cult-producing buttermilk fried chicken served at another Keller landmark, Yountville’s Ad Hoc.  You can procure the popular poultry, served with “seasonal accompaniments” on the first and third Monday of every month.  Read more about Keller’s empire here.