what stones make good baking stones?
I've been buying salvaged lumber from the nearby second-hand yard for a while and recently noticed that that have quite a selection of large tiles and countertop cut-offs.
What material would make a good and safe baking stone, marble or granite? And what thickness?
Would sanding/polishing take care of sealant/varnish they treat tiles and countertops with?
Thanks and best wishes, h.