Why Pizza Stones Need Special Care
A pizza stone is a thick slab of porous ceramic, cordierite, or fire-clay designed to pull moisture out of dough and deliver the crispy bottom you get from a real pizza oven. Those pores are a feature, not a defect — they absorb moisture and transfer heat evenly. But the same porosity means the stone will soak up anything you put on it, including dish soap, which will then leach into your next pizza. Pizza stones also hate thermal shock. A cold stone dropped into a hot oven or a hot stone hit with cold water cracks like a windshield. The dark stains that build up over time are seasoning, not filth. Treat the stone like cast iron: clean it dry, protect the patina, and never let soap or running water near it.
What You'll Need
- Plastic bench scraper or spatula — lifts off crust and cheese without scratching.
- Stiff nylon brush — a dedicated pizza stone brush or a clean grout brush works.
- Coarse salt — acts as a mild abrasive for stubborn spots.
- Damp (not wet) cloth — for the final wipe only.
- Baking soda paste — reserved for heavy burnt-on residue.
Step-by-Step: How to Clean a Pizza Stone
Step 1: Let the Stone Cool Completely
Never clean a hot pizza stone. Let it cool in the oven with the door cracked for at least an hour after baking. Removing a 500-degree stone to a cool countertop introduces thermal shock that creates hairline cracks you cannot see until the next use, when it splits in half. Patience here protects a $40 piece of equipment.
Step 2: Scrape Off All Food Debris
Use a plastic bench scraper held at a low angle to push burnt cheese, crust crumbs, and char off the surface. Work in long strokes across the stone, not circular motions. Get under the debris rather than grinding it into the pores. Flip the stone and do the bottom too — drippings collect there. Shake the loose debris into the trash.
Step 3: Scrub With Coarse Salt
For stains that won't scrape off, sprinkle a tablespoon of coarse kosher salt directly on the dry stain and scrub with a stiff nylon brush in circular motions. The salt crystals act as gentle abrasives and pull grease from the pores without introducing moisture. For truly stubborn burnt spots, make a paste of baking soda and a minimal amount of water — just enough to form a thick paste — apply only to the stained area, let sit for 10 minutes, then scrub and wipe dry immediately.
Step 4: Wipe and Dry Fully
Wipe the stone with a barely damp cloth to remove salt residue. Then set the stone back in a cold oven and turn it to 200 degrees for 30 minutes to drive out any moisture that crept into the pores. Moisture trapped inside the stone will turn to steam on the next high-heat bake and crack the stone from the inside.
Pro Tips
- Never use dish soap — ever. Even a drop of Lemon Glow Dish Soap on your dishes is great, but on a porous stone it soaks in and taints every pizza after it. Save the soap for the pizza peel, the pan, and the cutter — not the stone.
- Dark stains are good. That brown-to-black patina is carbonized oil and flour — seasoning that makes the next pizza release cleaner and taste better. Don't try to scrub it back to white.
- Use parchment paper for messy pies. A sheet of parchment between the dough and the stone catches cheese overflow and crust char, extending the time between deep cleans dramatically.
FAQ
Can I put a pizza stone in the dishwasher?
Absolutely not. The detergent soaks deep into the ceramic, the jet spray and thermal cycle cause cracks, and the stone often breaks before the cycle finishes. Dishwashers destroy pizza stones.
My stone has a big grease stain — is it ruined?
No. Run a self-clean cycle on your oven with the stone inside. The high heat will carbonize the grease to ash, which brushes off. This is the only safe way to strip a pizza stone back to a fresh state.
Why did my pizza stone crack?
Three reasons: thermal shock (hot stone + cold water, or cold stone + hot oven), trapped moisture turning to steam on high heat, or dropping/impact. Always preheat the stone with the oven from cold and let it cool inside the oven.
Should I oil my pizza stone?
No. Unlike cast iron, pizza stones season themselves from the natural fats in pizza dough and cheese over time. Adding oil creates smoke, off-flavors, and uneven absorption. Let the stone develop its patina naturally.
