Homemade Tomato Sauce

---

Heat oil in a large saucepan or dutch oven over medium high heat. Add onions and cook until soft. Add garlic and cook for 30 seconds. Add tomatoes to the pot and bring to a boil. Lower heat to medium and cover pot.

After about 30 minutes, tomatoes should be soft with the skins falling off. Turn off heat and let cool.  Run tomatoes through a food mill.

Add liquid back to the pot and bring to a boil. Turn heat down to medium and cook uncovered until sauce is 4 cups or desired consistency, about 1 hour.

In sterilized pint jars, add 1/4 tsp of citric acid and fill the rest with tomato sauce.  Process in a water bath for 45 minutes.