Buseca alla milanese (Milanese-Style Tripe)

Buseca alla milanese (Milanese-Style Tripe)
Ingredients: (4 to 6 servings)
2 lb. (1 kg) tripe
100 gr (3 ½ oz./100 g) pancetta or bacon
½ cup (3 ½ oz./100 g) dried white beans
2 cups (10 oz./300 g) tomatoes, fresh or canned
1 stick celery
1 onion
1 carrot
1 tablespoon of butter
2 tablespoons of olive oil
A few sage leaves
1 garlic clove
1 bay leaf
1/2 glass (60 ml) of dry white wine
4 cups (1 liter) beef stock
Grated Parmesan
Salt, pepper