Braised Pork Roast with Mushrooms and Tomatoes

Ingredients

• • 1 roast pork shoulder, about 1.8 kg (4 lb) with the bone, trimmed of fat
  • 45 ml (3 tbsp) olive oil
  • 2 onions, chopped
  • 2 red bell peppers, seeded and diced
  • 2 cloves garlic, chopped
  • 225 g (1/2 lb) white mushrooms, quartered
  • 30 ml (2 tbsp) unbleached all-purpose flour
  • 125 ml (1/2 cup) white wine
  • 500 ml (2 cups) chicken broth
  • 1 can (398 ml/14 oz) diced tomatoes
  • Salt and pepper