15 August 2020 Mixed Juice (Tomato, Beet, Onion, Celery) Posted on August 15, 2020 by Durgan 15 August 2020 Mixed Juice Sixteen liters of mixed juice was made. Twenty five pounds of mixed tomatoes was the base. Beets,celery,onion was added. The combination makes a wholesome juice. Th jars were pressure canned at 15 PSI for 15 minutes.