Slow Cooker Bolognese Sauce

Ingredients

• • 1/4 lb (115 g) pancetta, finely chopped
  • 2 lbs (1 kg) mixture of ground meat (veal, pork and beef)
  • 2 tablespoons (30 ml) olive oil
  • 2 onions, finely chopped
  • 2 carrots, peeled and grated
  • 2 stalks celery, finely chopped
  • 3 cloves garlic, finely chopped
  • 1/2 cup (125 ml) white or red wine
  • 1 can 28 oz (796 ml) crushed tomatoes
  • 3/4 cup (180 ml) chicken broth
  • 3/4 cup (180 ml) milk or 35% cream
  • 1 can 5 oz (156 ml) tomato paste
  • 2 bay leaves
  • Salt and pepper