To remove soap residue from your 9x13 casserole stone, first rinse the stone with warm water. Then, mix equal parts white vinegar and water in a spray bottle and spray the solution onto the stone. Let it sit for 5-10 minutes, then scrub with a soft brush or sponge. Rinse thoroughly and dry with a cloth.
It is not recommended to use soap on your casserole stone, as it can leave behind a residue that can affect the taste of your food. If soap has been used on your stone, follow the steps listed in the first question to remove the residue.
If the soap residue is stubborn and won't come off with the vinegar and water solution, you can try using a paste made of baking soda and water. Apply the paste to the residue and let it sit for 10-15 minutes before scrubbing and rinsing.
It is not recommended to use other cleaning products on your casserole stone, as they may be too harsh and can damage the stone. Stick to using natural cleaning solutions like vinegar and baking soda.
It is recommended to clean your casserole stone after each use. This will prevent any food or residue from building up on the stone and affecting the taste of your dishes. If soap has been used, make sure to thoroughly rinse and dry the stone before using it again.