02When all of the spinach is wilted, stir in the tomatoes and peppers. Stir in the broth. Nestle the chicken down into the mixture and simmer until the chicken is tender, about 45 minutes.03Meanwhile, after about 20 minutes, place the water and 2 teaspoons of salt in a large saucepan and bring to a boil over medium heat. Add the cornmeal in a slow, stream, whisking constantly. Reduce heat, switch to a wooden spoon and stir constantly, until mixture is thick, about 20 minutes.04Stir the vinegar into the ragout and season with 2 teaspoons of salt and pepper to taste. Divide the polenta among 4 shallow bowls and spoon the ragout over it, including a thigh and a drumstick in each portion. Serve immediately.