Perhaps you’ve heard of keeping things cool near a running spring or in a deep root cellar. But here’s another way.
The idea for an off the grid refrigerator without electricity is to put one pot inside a larger pot. Then put sand in between the walls of the inner and outer pot. Pour water into it a couple of times a day. The moisture evaporation helps keep the inner pot’s contents cool.
The video below shows what a zeer pot is and how it works. With a couple of clay pots, sand and water, you can have off grid refrigeration without electricity.