Spaghetti Sauce - cooking recipe

Ingredients

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

Preparation

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.