Turkey breast rolled with fresh herbs, orange zest, and spices is covered with pancetta and then roasted. It's sliced and offered atop a dressing made with farro (a whole grain), oranges, black grapes, and pine nuts. White-wine sauce accompanies the ensemble.
A capon, which weighs a good eight or nine pounds, is a young male chicken that has been neutered. The snow-white breast meat is very tender and finely textured. You can find capons fresh or frozen at butcher shops and many supermarkets.
To make the rich, brown sauce that is key to the flavor of this dish, it is important not to rush the initial searing of the meat. To make peeling the pearl onions easier, soak them first in warm water for 15 minutes.