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Pure ceramic is porous, so it is never used in direct contact with food, because the food will be absorbed in the pores.

In all cookware where the body is ceramic, the surface is covered with some glaze, enamel or plastic coating, which is the material that really counts for food contact.

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Unglazed clay pots have been used for thousands of years, I have one myself. You soak it in water for 15 minutes before putting the food in.

https://www.youtube.com/watch?v=7EbdBty-40I

You are right that unglazed pottery had been used for many thousands of years, before glazing was invented.

The information about soaking is interesting.

I was not aware of it, because there are many countries were unglazed pottery is no longer used, at least I have never seen any of it used for food contact, but only for different purposes.

So is ceramic cookware safe? This stuff here: https://www.goodhousekeeping.com/cooking-tools/a26078798/bes... Basically you are saying we have no clue what is actually in contact with our food?

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