Originally Posted By: Robotic
And my last tid-bit of input on the whole subject is related to how to clean off the nasty caked-on carbon build-up of decades of abuse (say you got an old pan from a boot sale). Get out a blow-torch and heat the pan evenly to a cherry red- burning off everything that can't be otherwise cleared away. Never tried this method- probably too radical for practicality.

I think if I had to go to the trouble of renting a blow-torch (assuming I don't have one), I'd just toss the pan. One of the greatest features of cast iron is that it's so damn cheap, even brand new. Plus, you usually see dirt-cheap pans at garage sales that look terrible but will be like new after a run through a liquid-hot oven.

Originally Posted By: DWallach
For my cast iron skillets (now in several sizes!), I always do the same thing. Cook with them as normal. Clean in the sink with Dawn...

This surprises me. The one consistent thing I've read is to not use detergents...

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If I feel the seasoning is lacking, I'll cook up some bacon. ...you can brush on a thin layer of bacon grease...

Yeah, I have no doubt this would work, and is probably a reason that our pan isn't that non-stick, but since my wife doesn't eat meat, it's a bit hard to do. Maybe Crisco would work?
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Matt