Ravioli with Tomato Gravy

Tomato Gravy may be used as a sauce for spaghetti either with or without ground beef.

Tomato Gravy
1 1/2 cups olive oil
5 pounds pork neck bones
3 pounds or 5 large onions
1 whole pod garlic
1 small rib celery with leaves
2 (28 ounce) cans tomatoes
2 cans water
3 tablespoons oregano leaves
4 tablespoons basil leaves
1 (4 ounce) bottle Kitchen Bouquet