Pressure cookers make great “bush fridges”. We used to live in a very remote Uganda village. We’d cook a big pot (pressure cooker) of beans, onions & beef for supper.
After dishing out everyone’s portion, we’d put the lid back on the pressure cooker, heat until the weight jiggled then set it off the fire.
Presto, sterilized & “canned”. We could make a meal safely last several days.
Neat! I never thought of doing that, but I see how that would work.