Stains are to be expected when you use enameled cookware and does not affect performance.
To remove slight stains:
Follow the steps above to clean your cookware.
Rub with a dampened cloth and Lodge Enamel Cleaner or another ceramic cleaner according to directions on the bottle.
For persistent stains:
Follow the steps above to clean and remove slight stains.
Soak the interior of the cookware for 2-3 hours with a mixture of 3 tablespoons of household bleach per quart of water.
To remove stubborn, baked-on food, boil 2 cups of water and 4 tablespoons of baking soda. Boil for a few minutes, then use a pan scraper to loosen the food.