2 cups cored, cut-up tomatoes
1 small onion, chopped
1/4 cup chopped celery
salt to taste
- Combine ingredients. Cook over low heat in a covered saucepan 15 to 20 minutes.
- Purée or force through a sieve or colander. Return to saucepan and cook until thickened.
- Pour puree onto plastic wrap and spread by tilting the tray or cookie sheet to about 1/8 inch thick. Leave a 1-inch border to allow for spreading during drying.
- Puree may take six to 24 hours to dry. See dryness test below.
- Remove from tray and cool briefly. Place leather on clean plastic wrap and roll up, so plastic separates layers of leather.
Dry time: 6 to 24 hours
Test for dryness: Leather is done when it has a leathery appearance and is pliable enough to roll up in a jelly-roll fashion. Test by separating leather from plastic wrap. If it separates easily it is done.
So Easy to Preserve, 6th ed. 2014