FROM pots, gourds, the local 'labu' and the amphoras of ancient Greece, clay has long been used to store everything from grain, water – and the case of the amphoras – wine. Nowadays, most people might have 'labu' lying around the house as a decoration or a hand-me-down from their grandparents but not many use these receptacles for their original intended use, which is to store stuff. However, folks back in the day swore that their clay labu cooled boiling water faster than leaving it in the pot.

https://www.thestar.com.my/news/true-or-not/2023/06/14/quickcheck-do-clay-039labu039-make-drinking-water-cooler

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