Just say NO!
Some folks believe that you can clean your crusty cast iron pans by throwing them into a fire, getting them red-hot, and then letting them cool.
This is a bad idea, as I explained in an earlier blog post (which you can find here). I recently came across a pan that had endured this treatment. Take a look for yourself:
The pan also cracked – presumably from the heat – you can see it in the third photo. It now also is irreversibly warped, and rocks and spins.
Please treat these old treasured pieces of American history with care. Clean them properly – don’t throw them into a fire!