If your cast iron pan is "peeling," it is likely that the seasoning on the pan is coming off. Seasoning is a crucial layer of polymerized oil that creates a non-stick surface and helps prevent rusting on cast iron cookware. Several factors can cause the seasoning to peel off:
Improper cleaning: Harsh or abrasive cleaning methods, such as using metal scouring pads, harsh detergents, or the dishwasher, can strip away the seasoning.
Excessive heat: Subjecting the cast iron pan to very high temperatures for prolonged periods can cause the seasoning to break down and peel off.
Cooking acidic foods: Acidic ingredients, like tomatoes or vinegar, can react with the seasoning, causing it to degrade over time.
Cooking sticky or starchy foods: Cooking foods that tend to be sticky or starchy, like eggs or certain types of bread, can cause the seasoning to peel off, especially if not enough oil is used during cooking.
Moisture exposure: Leaving the pan wet for extended periods or storing it in a damp environment can lead to rust formation, which can, in turn, cause the seasoning to peel off.
Poor initial seasoning: If the cast iron pan wasn't seasoned properly when it was new, the seasoning might not adhere well and can eventually start peeling.
To address the issue of peeling seasoning, you can try the following:
Re-season the pan: Strip off any remaining seasoning and start the seasoning process from scratch. Wash the pan with warm, soapy water, dry it thoroughly, and then apply a thin layer of vegetable oil or flaxseed oil to the entire surface of the pan. Place the pan upside down in a preheated oven and bake it to create a new layer of seasoning.
Avoid using harsh cleaning methods: Stick to gentle cleaning methods like using a soft sponge or brush and warm water. If there are stubborn residues, consider using kosher salt to scrub the pan gently.
Avoid acidic or sticky foods: While a well-seasoned cast iron pan can handle some acidic ingredients, it's best to minimize their use in the pan to preserve the seasoning.
Dry the pan thoroughly: After washing the pan, dry it immediately and thoroughly to prevent rusting.
Use proper cooking techniques: Use enough oil or fat while cooking to create a protective layer over the seasoning and prevent sticking.
By taking proper care of your cast iron pan and re-seasoning it when necessary, you can maintain its non-stick properties and enjoy its many benefits for years to come.