How do you clean stained corningware?
April 6th, 2011 | 
Author: My corningware has grey scratches and brown burn marks. I tried cleaning it with cleansers with bleach and Bon Ami but nothing helps. How do I get them white again?
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My corningware has grey scratches and brown burn marks. I tried cleaning it with cleansers with bleach and Bon Ami but nothing helps. How do I get them white again?
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corningware actually makes a cleaner for corningware. Its kinda like soft scrub. It really works too! I even use it on my kitchen sink that is white (aka. white porcelian). My bottle cost about 5 dollars, and as lasted me over a year.
try barkeeps friend in the bon ami isle
Try brillo or sos, you could even try making a paste with baking soda and water and letting it sit. Or you could sprinkle baking soda on it and pouring a little vinegar on the baking soda.
If it is old corningware, the grey is the coating coming off and you can’t remove it. (Older corning ware may contain lead, if the item gets really hot when you use it in the microwave and the food is only warm, it probably contains lead and you need to toss it because of the "grey" marks.)
Actually the grey marks are only scratches caused by using metal utensils – they have nothing to do with lead and there is not reason to “toss”. Look at the corningware.com FAQ – you may be able to remove the grey marks with a non-abrasive cleanser.
bleach
fill the pot up with water and bleach and let it set for about 1 hour. If the stain isn’t gone then, use a SOS pad. This always works for me.
go to corningware.com and they give you tips on how to care for your corningware. I’ve read it and learned that to loosen baked-on food, allow stoneware ovenware to cool. DO NOT allow stoneware cookware to soak/stand in water for an extended period of time. Applied heat after soaking may cause glaze crazing. If scouring is necessary, use only plastic or nylon cleaning pads with non-abrasive cleansers. It also said that if it is severley scratched up you should not use it.