Chicken with Shrimp

Poulet aux écrevisses—chicken with crayfish—is one of the great dishes of France, or more specifically of Lyon. Two hundred years ago, there were more such dishes—seafood combined with chicken—that provided a means of extending the flavor of rare and expensive ingredients with something relatively neutral, such as chicken. The same method used for crayfish works for shrimp. Be sure to buy wild gulf shrimp with heads for this dish, as you will need the heads to make the creamy broth. Or, if