-
Chop the onions, celery, bell peppers, parsley, and other vegetables you are using. Add them to a large stock pot.
-
Chop the tomatoes and add them to the pot. The tomatoes do not need to be peeled because the mixture will be strained later.
-
Simmer the tomato and vegetable mixture for at least 20 minutes, or until the vegetables are soft enough to put through a food mill.
-
Put the cooked mixture through a food mill to remove the seeds, skins, and pulp.
-
Pour the strained juice back into the stock pot and heat it to boiling.
-
Place 2 tablespoons bottled lemon juice and 1 teaspoon salt into each sterilized quart jar.
-
Pour the hot tomato juice into the jars, leaving ½ inch headspace.
-
Wipe the jar rims clean and place the lids and rings on the jars.
-
Process the jars in a boiling water canner for 40 minutes.
-
Remove the jars from the canner and let them cool on a towel on the counter until they seal.
-
If a jar does not seal, refrigerate it and use it within the next couple of weeks.