There really is no one definitive recipe for homemade taco sauce. However, common ingredients might include tomatoes, onions, garlic, chili peppers, cumin, and oregano.
Dip tomatoes in boiling water, peel and chop.
Chop small onions.
Puttomato, onion and chili in 6 quart pan.
Add seasonings and simmer for 1 1/2hours.
Put in canning jars.
Bath in hot water bath for 30 min.