This is a Ball 21-quart Electric Water Bath Canner & Multi-Cooker! The canner allow for large-batch canning, fitting 7 quart jars or 8 pint jars comfortably at one time. You can use the electric cooker to steam, simmer, boil or blanch. It can be used as a stockpot for pasta's, soups and stews or as a steamer for vegetables and seafood. One simple dial controls temperature. Tempered glass lid allows you to monitor food & keep moisture in. Easy-drain spigot for added convenience. Slip-resistant handles. Detachable base nests for easy storage. Dishwasher-safe lid & steaming/canning jar rack.
The best feature is the fact that you can save your glass top stove and doing your canning on the counter in your kitchen, or garage, or even outdoors if you have an electrical outlet. Saves heating up your house.
They are in the $300 range to purchase from Amazon or Walmart.