Ball EasyCanner, silver, steel, electric water bath canner. Large 21-quart capacity; jar capacity, 7 quarts or 8 pints. UI Design for Ease of Use for both New and Experienced Canners: Usability testing with consumers resulted in all participants successfully understanding how to navigate and interact with new UI display. Upgraded heat sensors that account for altitude and maintain optimal temperatures. New contemporary design. Includes multicooker functionality. Ball canners use the water bath canning method for preserving food.