I thought you were talking about teflon and those green pans advertised on TV. I am not so sure we can use ceramics on glass tops, I’ll have to look into it. My Mom died from Alzheimer’s and cooked in aluminum all of her life so I am sceptical of all metals. Dupont giving advice about teflon is like Monsanto telling you that GMO’s are good for you. Call me paranoid Jeff Chandler, I have been called worse!
I'm right with you on every bit of that.
The green pans on TV are ceramic. As far as the ceramics are concerned, it all comes down to what's in the glaze, and can it come back out at cooking temperatures. It's probably fired to red-hot temperatures in the kiln, so it probably is stable at lower temperatures...that's the real question.
I was reading about glazes utilizing such things as Milk of Magnesia and Zinc Oxide (that white paste for your sunburned nose) not real scary sounding stuff.
Ceramics in cooking goes all the way back to the stone-age, but more recently, everyone and his dog has been preparing their meals in "crock pots" with no controversy.