Vinegar is the key to getting a rusty cast iron pan back in shape, but you need to watch that it doesn't corrode the iron.

For the same reason as tomatoes, vinegar can eat away at your carefully seasoned and maintained cast-iron skillet sending you back to square one. Vinegar-based foods like adobo or Carolina-style BBQ ...

Mr. Heaton says, that if the cast iron contains about five per cent of ... and forged into four blooms under the steam hammer, then rolled into square billets, which were cut up, re-heated ...