# Pot-in-pot refrigerator

> for cooling food, two clay pots of different sizes placed separately inside each other with moist sand

**Wikidata**: [Q3306802](https://www.wikidata.org/wiki/Q3306802)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Pot-in-pot_refrigerator)  
**Source**: https://4ort.xyz/entity/pot-in-pot-refrigerator


## References

1. BBC Things