How to clean a pizza oven stone?

Clean a pizza oven stone by scraping off excess food with a spatula, letting the stone cool completely, then scrubbing it under warm water with a brush and no soap or detergent. Let it air dry fully before it goes back in the oven.

That sequence comes from the makers themselves. Gyreuni, whose 13 inch stone appears in our guide to Best Pizza Stones for Oven and Grill Baking, publishes the scrape, cool, warm water and brush routine and states plainly that soap or detergent should never touch a stone. American Metalcraft, also in that guide, says to let the stone cool completely and wipe it with a damp cloth, avoiding soap and never submerging it in water.

Scrape first, cool completely

The first move is mechanical, not chemical. Gyreuni tells owners to scrape off any excess food with a spatula before cleaning, which removes the bulk of cheese, crust and flour before water is involved. Do this while the stone is still warm enough for residue to release, but never plunge a hot stone into water.

Cooling is the step people skip. American Metalcraft’s published instructions say to allow the stone to cool completely after use before wiping it clean with a damp cloth. A cordierite or ceramic stone that goes from baking heat to a cold sink can crack, and a cracked stone is done. Give it time on the counter, not in the fridge.

Gyreuni’s stone is listed at 13 inches across and 0.6 inches thick, made of cordierite and rated heat safe to 1472 degrees Fahrenheit. Old Stone’s rectangular stone in the same guide measures 14 by 16 inches and 0.75 inches thick, also cordierite, rated to 1450 degrees Fahrenheit. Thick stones hold heat longer, so they take longer to cool.

Warm water and a brush, never soap

Once the stone is cool, Gyreuni’s instructions are to run it under warm water while scrubbing with a brush. No soap, no detergent. The reason is the material: a porous stone absorbs liquid, and soap drawn into those pores stays there and flavors the next pizza. American Metalcraft’s guidance is even more conservative, a damp cloth rather than a rinse, and no submerging.

Stains are expected. Gyreuni states that marks from oils, cheese and crusts are normal and will not affect the performance or function of the stone, and notes that many cooks prefer a stone that has been used for a while. If the discoloration bothers you, the maker suggests baking on the parchment paper included in its set rather than scrubbing harder.

For a steel rather than a stone, the routine changes. Loftern’s 14 by 16 inch carbon steel plate, listed at 13.6 pounds, is described as pre-seasoned and low maintenance, with a quick wipe all it takes and no soaking. That is a different material with different rules, so match the method to what you own.

Dry fully before the next bake

Old Stone’s published line is short: the stone cleans up easily, just rinse and air dry. Air drying matters because trapped moisture in a porous stone turns to steam at baking temperatures, and steam is what cracks stones. Stand it on edge somewhere with airflow until it is dry through, not just dry to the touch.

Storage follows the same logic. A stone kept in a damp cabinet or stacked against a wet wall picks up moisture it will release in the oven. Keep it dry, keep it flat or on edge, and skip any airtight container that traps humidity. The same caution applies to the oven itself: BIG HORN’s 14 inch indoor electric oven, in our guide to Best Indoor Pizza Ovens That Reach 800 Degrees, lists a removable pizza stone specifically so the stone can come out for cleaning.

Removable stones are the easier case. If your oven’s stone lifts out, clean it on the counter and leave the oven cavity alone. If it is fixed, you are cleaning in place with a damp cloth and a brush, and you wait longer before the next bake.

What not to put on a stone

Soap and detergent are out, per both Gyreuni and American Metalcraft. Submerging is out, per American Metalcraft. The dishwasher is out for porous ceramic and cordierite, even where a listing uses the phrase dishwasher safe: American Metalcraft’s own title calls its 13 inch ceramic stone dishwasher safe, yet its published features say to wipe with a damp cloth and avoid soap or submerging in water. Follow the care instructions, not the title.

Oven cleaners are a separate product for a separate surface. The picks in our guide to Best Oven Cleaners for Fume-Free and Heavy-Duty Jobs are formulated for oven interiors: Easy-Off’s fume free formula is sold in a 24 ounce can, Goo Gone’s foam comes in a 14 ounce can and its maker states it should not be used on aluminum or faux stainless steel, and Carbona’s gel is a 16.8 fluid ounce bottle. None of these makers publishes instructions for use on a baking stone, and a caustic gel driven into a porous stone is not something you can rinse back out.

Keeping the oven around the stone clean

Most of what lands on a stone arrives as flour and semolina from the peel. The Breville Smart Oven Pizzaiolo, in our guide to Best Pizza Ovens for Fast High Heat, ships with a pizza peel and pizza pan and lists a cordierite stone heated by incoloy elements, with a double-pane front window and insulation around the heat chamber. A light dusting of flour on the peel, rather than a heavy one, keeps the stone cleaner between bakes.

Outdoor ovens bring ash. The Ooni Karu 12, listed at 26.4 pounds and reaching 950 degrees Fahrenheit, is described with a fuel tray designed to leave no excess ash to clean, which reduces what settles on the stone. The Cozze 13 inch gas oven uses a rotating cordierite stone, so residue spreads evenly rather than concentrating in one burnt patch.

None of these makers publishes a cleaning interval, a water temperature, or a drying time for their stones, and this site has not compared those figures. The safe rule is the one the stone makers do publish: scrape, cool, warm water and a brush, no soap, dry fully.