Tomato Soup (Canning Recipe)
(My Mom's Tomato Soup - Shirley Hofmann)

1 peck ripe tomatoes with skins, diced
1 bunch celery, diced
6 large onions, diced
1/4 cup salt
1/4 teaspoon cayenne pepper, optional
1/2 teaspoon black pepper
1/4 cup butter
1/4 teaspoon baking soda
1 cup flour
3/4 cup brown sugar (or to taste)

In a large pot, boil tomatoes, celery, onions, and salt together until tender.  Strain through a food mill.  Mix pepper, butter, baking soda, flour, and sugar together with a little water to make a thickening.  Combine with tomato mixture and simmer for 20 minutes, stirring often.  Pour into hot sterilized jars and seal with hot lids.  Hot water bath can for 30 minutes.