Fresh Tomato Sauce

4lbs tomatoes
1/4 cup Olive oil
1 small onion
2-3 small cloves garlic
1/2 medium carrot
1/2 stalk celery
1/2 teaspoon salt
1-2 fresh basil leaves

Peel and seed tomatoes.
Finely chop onion, carrot, celery and garlic then cook over medium heat for ~10 minutes stirring constantly.  Add chopped tomatoes and reduce heat to medium-low. Simmer for 45 minutes.  Salt to taste adding finely chopped fresh basil leaves.

Makes about 4 cups.