The previously slaked clay is now poured out, as a liquid, onto a plaster drying bat. The plaster is porous, like the olla itself, and soaks up the physical water from the clay. I will allow enough water to be drawn out of the clay so that it is once again useable, or plastic, capable of being shaped on the potter’s wheel. You can see a small fan in the background and if you look closely, you will notice that the plaster bat is elevated on 2″x2″ lumber so there is air flow underneath the bat. After the bat becomes waterlogged, I turn on the fan and dry it out. I don’t use the fan while clay is on the bat as it will dry the clay too fast and not uniformly. The clay is ready to pull up as soon as you can peel it off cleanly.