How do you get the black off a pizza stone?

Steps to Cleaning Your Stoneware

This is a simple way to have and maintain clean you oven.

without water, elevate to the maximum temperature for 2 hours and just brush it, when is cold back remove the excess.

Process: 1 time at week 

For a deeper cleaning.

With a COLD stones/bricks (if the stones are hot, will broke)

1. Remove the stone carefully and one by one, put a small amount of water on the stone — just enough to get it slightly wet.
2. To get off big chunks of baked food, scrape them off with  a spatula  and stone brush to scrub the pizza stone thoroughly
3. Wipe the stone off with a damp rag.
4. Let the stone air dry completely before placing it in a hot oven.

Never wash your pizza stone with soap. The pores will absorb it, and you'll be able to taste it when you make your next pizza. Never submerge your stone in water.