chaparrito
Member
Re-seasoned raw iron pieces will often take on that reddish appearance for a while until a thicker patina develops, especially when the re-seasoning was done with oils that do not polymerize evenly; like most cooking oils and animal fats. I don't understand the chemistry, but have seen it quite a bit.
I use pure food grade flax oil for renewing the finish on old or rusted pans. Flax oil is a "drying oil" that readily forms a coating, think about the skin that forms on a can of linseed oil, or paint that contains linseed oil. Linseed is made from flax.
I remove the old finish or rust and crud from pans using the 5 hour cleaning cycle in my oven. All that's necessary afterwards is a brief scrub and the pan is down to white metal. I could see using a grinder on a badly rust-pitted pan, but not otherwise. Grinding off bad patina doesn't sound like any fun.
Forgot to mention, 475 degrees isn't hot enough to leach anything out of cast iron. I get my skillets hotter than that when searing steaks.
I use pure food grade flax oil for renewing the finish on old or rusted pans. Flax oil is a "drying oil" that readily forms a coating, think about the skin that forms on a can of linseed oil, or paint that contains linseed oil. Linseed is made from flax.
I remove the old finish or rust and crud from pans using the 5 hour cleaning cycle in my oven. All that's necessary afterwards is a brief scrub and the pan is down to white metal. I could see using a grinder on a badly rust-pitted pan, but not otherwise. Grinding off bad patina doesn't sound like any fun.
Forgot to mention, 475 degrees isn't hot enough to leach anything out of cast iron. I get my skillets hotter than that when searing steaks.
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