How Do I Can Tomato Sauce?
This delicious three ingredient tomato sauce is perfect for canning! But storing the homemade sauce in canning jars takes a few extra steps after the sauce is prepared. Follow these instructions for making your own canned tomato sauce at home.
Sterilize the jars before storing. While the tomatoes are cooking in the Instant Pot, wash your jars in hot soapy water and rinse them well. Then, place the glass jars in a pot of boiling water and allow them to sterilize for around 15 minutes. After that, make sure the jars are completely dry.
Fill the jars. Allow the cooked sauce to cool completely, then pour it into the clean jars. Leave around ¼ inch of space at the top of each jar to give the sauce space to expand as it cools. Clean excess sauce from around the rims of the jars with a damp cloth, then place the lids on top. Twist the lids until they are finger tight, making sure they aren’t overtightened.
Boil the jars. When the lids are on, place the filled jars in a pot of boiling water, making sure the jars are covered with at least one inch of water. Boil 12 ounce jars for 10 minutes or 16 ounce jars for 15 minutes.
Allow the jars to cool. When the boiling time is up, remove the jars from the water and allow them to cool at room temperature for around 24 hours. Then, check to ensure the jars are sealed by pressing on the center of the lid. If the center pops up, the jar is not sealed and should be stored in the refrigerator. Otherwise, the jars can be stored in a cool, dry place for up to one year.