Avoid detergent; it will seep into the stone, imparting its own flavor and fragrance which will turn up in your bread. Instead, use baking soda and a clean, hot, damp cloth. For stubborn baked-on spots I use salt and sometimes synthetic scouring pads (Scotchbrite, etc.). Don’t worry about stains; they’re unavoidable as far as I can tell and they don’t seem to hurt anything. Just try not to scratch or scar the stone’s finish.
Avoid detergent; it will seep into the stone, imparting its own flavor and fragrance which will turn up in your bread. Instead, use baking soda and a clean, hot, damp cloth. For stubborn baked-on spots I use salt and sometimes synthetic scouring pads (Scotchbrite, etc.). Don’t worry about stains; they’re unavoidable as far as I can tell and they don’t seem to hurt anything. Just try not to scratch or scar the stone’s finish.