frying pan. Saute in a little of the oil the carrots, celery, onion, parsley & garlic. Add the tomato sauce, beef stock and wine. Add the seasonings and lemon peel. Simmer the sauce for a few minutes, and then add the tripe. Cook it on top of the stove, covered, for 1-1/2 hours or until tender. Or bake it in a moderate oven. When ready to serve, sprinkle on the Parmesan or Romano. Serve with pasta.