Prepare the sand: remove large pieces

Remove large particles and stones so they do not take up too much space. You can do this by hand or sieve the sand through a 3-5 mm wire mesh.

Prepare the sand: remove dust

It is recommended to remove the dust from the sand. Otherwise the dust can clog the pores of the pot.

Dust can be removed by a method called winnowing.

To remove dust by winnowing, slowly pour the sand from shoulder height (you may need a stool depending on your height) onto a cloth on the ground. Any gentle breeze or air movement will blow the dust away while the sand particles fall onto the cloth below.

Put sand in the bigger clay pot

Pour sand in the bottom of the outer pot to create an even surface for the inner pot to sit. The sand can be wet or dry when adding it to the pot.

Put smaller pot into bigger clay pot. Add sand.

Center the inner pot on the layer of sand inside the outer pot and fill the space between the two pots with additional sand. Make sure the top of the inner pot is at least 2 cm higher than that of the outer pot.

Wet the sand

Add enough water to wet the sand well. It is enough when it takes a few seconds for the water to absorb from the top. It is too much water if the inner pot begins to float. Then you have to drain the water before you use the cooler.

Now your clay pot cooler is ready to use