bbq: I've heard cooking fish on the BBQ is easily done by grilling the fish on a ceramic tile. I just want to find out how to tell if a tile is use for food preparation.|||how about using a pizza stone... I think you can find one at wal-mart for about $10. You probably would push the coals to the sides and put the pizza stone in the middle. Also, what's popular is using cedar for fish. Untreated cedar shingles are supposed to work too.|||Never heard of ceramic tile, but a plank of wood (alder, maple, etc...) works great for fish. You can buy them at nicer grocery stores or even at Lowe's/Home Depot.|||It's fine to use as long as it has a porcelein coating. Porcelein is used in cookware, stovetops and many other appliances. It's perfectly safe for cooking.|||Any Ceramic or (non-porous) surface should be food safe...however...Check into a "Cedar" grilling board! You would not believe the taste of a fish grilled on a simple slab of Cedar.|||A pizza stone was mentioned above. That's a good idea and I just wanted to add some tips on using a pizza stone. 1. Give it time to heat up. 2. Wash it with water only. It is very porous and if you wash it with dishwashing liquid your food will taste like soap.|||I know the tile MUST be un-glazed. If there is any kind of finish on the tile you should not cook on it. If you are not sure what unfinished tile looks/feels like then stop in any big department store or cookware shop and take a look at one of their baking/pizza stones and if your tile looks/feels like that then you should be ok. Unless your tile is a couple inches thick do not put it on direct heat in your grill and do not put cold food on a hot tile because it will shatter.