Things You'll Need
1/4 cup white vinegar
1/2 tsp. hand dish washing liquid
Nylon mesh scrubber
Liquid fabric softener
CorningWare is a type of cookware that offers the convenience of being able to cook, serve and refrigerate your food all in the same container. CorningWare casserole and baking dishes are easy to clean and care for. The cookware comes with lids for baking or storing, and these lids are most often made of glass. When baking a tomato-based dish, tomato stains can form on the lids, causing your lids to have a stuck-on food stain.
Pour 1/4 cup white vinegar into an empty dish pan. Add 1/2 tsp. hand dish washing liquid, and stir the solution around with your fingers to mix.
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Place the tomato-stained CorningWare lid in the dish pan, and wet the stains with the vinegar and dish washer detergent solution. Allow the stains to soak in the solution for 10 minutes.
Rub the tomato stains with a nylon mesh scrubber, working the cleansing solution into the stains to loosen them. Rinse your CorningWare lid with warm water to remove the cleaning solution and tomato stains.
Tackle remaining tomato stains with liquid fabric softener. Pour the fabric softener directly onto the stained areas of the CorningWare lid, and let the fabric softener remain there for a few minutes. Scrub the CorningWare lid with your mesh scrubber, then rinse thoroughly with warm water.
Remove the most stubborn tomato stains from your CorningWare lid by spraying the stained areas with oven cleaner. Place the lid in a garbage bag and seal the bag. Let the CorningWare lid sit in the garbage bag overnight while the oven cleaner removes the tomato stains.
Take the Corning ware lid out of the garbage bag, and wash with hand dish washing liquid. Rinse your Corning ware lid with water, and allow it to air dry.
Spray the inside of your CorningWare lid with baking spray to protect it from tomato and other stains. Bleach tomato stains in the sun.