How can I safely preserve tomato sauce using the water bath canning method?

To safely preserve tomato sauce using the water bath canning method, follow these steps:

1. Prepare your tomato sauce according to a trusted recipe.
2. Sterilize your canning jars and lids.
3. Fill the jars with the hot tomato sauce, leaving some headspace.
4. Wipe the jar rims, place the lids on, and screw on the bands.
5. Place the jars in a large pot of boiling water, ensuring they are covered by at least 1 inch of water.
6. Process the jars for the recommended time based on your altitude and the recipe.
7. Carefully remove the jars and let them cool before checking the seals.