Spaghetti Sauce
["1 lb. lean beef", "1 medium onion", "1 medium clove garlic", "1 tsp. oregano", "1 can tomatoes", "1 can tomato paste", "1 can mushrooms", "1/4 c. olive oil", "1 stalk celery", "1/2 pod sweet pepper"]
["Combine all ingredients except mushrooms and tomato paste. Simmer slowly until meat is in shreds.", "Usually takes 3 to 4 hours.", "Add the tomato paste and mushrooms about 1/2 hour before serving.", "Cook spaghetti in salted water and serve with sauce. Sprinkle with grated Parmesan cheese."]
["lean beef", "onion", "clove garlic", "oregano", "tomatoes", "tomato paste", "mushrooms", "olive oil", "celery", "sweet pepper"]