how to seal a pizza stone Possible Duplicate:
  How do I season my new pizza stone?  




I have a ceramic pizza stone, but ive heard it needs to be "sealed" with a coat of oil before I can use it. Any thoughts on how to do this? So far I've coated the stone with a thin layer of vegetable oil and added some garlic and rosemary. I feel like I should bake it in the oven now, but for how long? Any help would be great.
I recently seasoned my new stone by lightly oiling it and heating it at 450 degrees for about 20 minutes. The biggest thing to remember is placing the stone in a cold oven, and removing it from the oven only after its cooled back down. Taking the stone in or out of the oven while the oven is hot can cause the stone to thermal shock and break.