This dish blends fava beans with farro, a grain that is a favorite with health-conscious cooks. Ingredients: 3 cups farro 4 tablespoons extra-virgin olive oil, divided 1 stalk celery, finely chopped 1 carrot, finely chopped 1 onion, finely chopped 1 quart vegetable stock 1/2 cup dry white wine 7 ounces fava beans, or substiute canned, drained salt and freshly ground pepper 2 ounces aged pecorino, crumbled....

