How to clean cast iron: An expert guide to washing your pan without sabotaging seasoning

Maryal Miller Carter, USA TODAY
·3 min read

If traditional wisdom has scared you away from using any kind of soap on your beloved cast iron cookware, you’re not alone. We’ve all heard the warnings. Historically, most soap was made with lye, a highly caustic compound known for its impressive ability to break down grease. That's great for cleaning but not so great for the polymerized oils and fats that create a good cast iron seasoning. However, most commercially produced dish soaps today do not contain lye and won't sabotage your seasoning.

Yep, you read that right. In fact, cleaning cast iron with mild soap once in a while helps remove stubborn residues and odors without stripping the seasoning layer. Still a little unsure? We get it, old beliefs can be tough to shake. But we guarantee you can use soap to clean your cast iron safely, protect your seasoning, and ensure your cookware’s longevity. Here's how.

Watch the video above to learn how to clean your cast iron pan with soap properly.

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How to clean a cast iron pan with soap

  • Allow the cast iron pan to cool down completely before cleaning to avoid warping or damaging the seasoning.

  • Use a mild dish soap and apply a small amount to the pan. Avoid harsh detergents with degreasing agents or powdered abrasive cleaners - these can strip away the seasoning.

  • Use a soft sponge or brush to gently scrub the pan, focusing on any stubborn residue or stuck-on food. Avoid using steel wool or abrasive scrubbers, as they can damage the seasoning.

  • Rinse the pan under warm water, ensuring that all soap residue is removed. Any leftover soap can affect the flavor of your food and potentially degrade the seasoning over time.

  • Use a clean towel to thoroughly dry the cast iron pan immediately after washing. Leaving the pan wet can cause rust to develop, compromising the seasoning and longevity.

  • If you notice any loss of seasoning or dull spots on the pan after cleaning, you may need to re-season it. Simply apply a thin layer of oil to the pan's surface and heat it in the oven or on the stovetop to re-season. The best oil for seasoning a cast iron pan is one with a high smoke point and a neutral flavor, such as vegetable oil, flaxseed oil, grapeseed oil, avocado oil or canola oil.

  • Store the cast iron pan in a dry place to prevent moisture from accumulating and causing rust. You can also place a paper towel or cloth inside the pan to absorb any excess moisture.

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This article originally appeared on USA TODAY: How to clean a cast iron skillet: Expert tips for to wash with ease