Ingredients
7 pounds green tomatoes (about 20 medium)4 large onions2 large red onions3 large green peppers2 large sweet red peppers4 teaspoons canning salt5 cups cider vinegar4 cups sugar2 tablespoons celery seed4 teaspoons mustard seed
Preparation
Cut tomatoes, onions and peppers into wedges. In a food processor, cover and process vegetables in batches until finely chopped. Stir in salt. Divide mixture between two strainers and place each over a bowl. Let stand 3 hours.
Discard liquid from bowls. Place vegetables in a stockpot; stir in vinegar, sugar, celery seed and mustard seed. Bring to a boil. Reduce heat; simmer, uncovered, 30-35 minutes or until thickened.
Carefully ladle hot mixture into eight hot pint jars, leaving 1/2-in. headspace. Remove air bubbles and adjust headspace, if necessary, by adding hot mixture. Wipe rims. Center lids on jars; screw on bands until fingertip tight.
Place jars into canner with simmering water, ensuring that they are completely covered with water. Bring to a boil; process for 15 minutes. Remove jars and cool.
