safety of using chamotte stone from hardware supplies store for baking Should I be concerned about heavy metal poisoning when I use said chamotte stone in an electric home oven? The dough would be placed directly on the hot stone.
I didn't want to buy a dedicated Baking Stone, because the dimensions didn't match as well as the prices seemed to be too high. So I picked up a chamotte plate from a hardware store.
General consensus is that you should not use something that is not food safe for cooking.
And in particular something made for construction/building, it probably contains lot of non-food safe chemicals, and they are probably not obligated to list the ingredients; so you do not know what is inside.