Paint can be removed with paint removers, enamel can be not removed. Paints do not withstand frying oil temperatures. Enamel COULD be sanded off or grinded away, both of which could damage the cast iron too.
Yes, you can still use a rusted cast iron pan. To remove the rust, scrub it off with steel wool or sandpaper, then reseason the pan by applying a thin layer of oil and baking it in the oven. Regularly maintain and season your cast iron pan to prevent rust in the future.
To effectively repair a cast iron pan, start by scrubbing off any rust with steel wool or a wire brush. Then, season the pan by coating it with a thin layer of oil and baking it in the oven. Repeat this process a few times to build up a non-stick coating. Regularly maintain the seasoning by cooking with oil and avoiding harsh cleaning methods.
iron oxide, commonly known as rust. This process is called oxidation, where the iron molecules react with oxygen to create a reddish-brown layer on the surface of the frying pan.
Rust
To use a cast iron grill pan effectively for cooking, preheat the pan on medium-high heat, oil the pan lightly, and place your food on the grill. Cook the food evenly on both sides, flipping as needed. Avoid overcrowding the pan to ensure proper searing. Clean the pan by scrubbing with a brush and drying thoroughly to prevent rust.
Not a good idea. Cast iron is greased and "seasoned" by being heated, which seals pores in the iron pan. Using soapy water strips that away- it will rust, food will stick to it. Most can be wiped clean. If it does get the soapy water treatment, renew the seasoning by wiping it with oil, heating it in the oven and let it cool.
The tar blocks oxygen from getting to the iron. But tar is such a nasty substance! There are a lot of better rust proofers available for iron. A lot of people use oils (the process of seasoning a cast iron pan involves heating the pan very hot then applying fat to it, allowing the fat to work itself into the pores of the iron), waxes or just paint.
The biggest advantage to an enameled cast iron pan is you don't have to prime the pan, You can also wash the enamel pan after each use, unlike non-enameled iron pans. The biggest con to using enameled cast iron pans is that the enamel contains heavy metals and can be bad for your health if pieces start to break off.
The cast of How to Clean a Cast Iron Pan - 2012 includes: Ahmed Khawaja
Cornbread is often baked in an iron skillet. But because iron skillets tend to rust easily, the bread should be removed from the pan and stored in some other container or bag, and the pan thoroughly washed and dried to prevent rust.
After the first seasoning, the cast iron will be ready to use and the patina (black natural non stick coating) will continue to build. If you care for the pan properly, you won't have to re-season it. But if you scratch off the patina (in the dishwasher or with a scouring pad), or you notice rust. You will need to re-season it. If it's rusting, you will need to scrape the rust off first.
It shouldn't, the acid to tomatoes is not strong enough to etch the cast iron.