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How to Clean a Cast Iron Skillet

Learn how to clean a cast iron skillet with hot water, gentle scrubbing, drying, oiling, stuck-food fixes, rust tips, mistakes, and FAQs.

Food & CookingEdited by Pramod Tiwari
2 min read

Quick Answer

To clean a cast iron skillet, wash it after cooking with warm water and a brush or non-scratch scrubber, use a small amount of mild soap if needed, remove stuck food with coarse salt or simmered water, dry it completely, then rub on a very thin layer of oil before storing.

Supplies Required

  • Warm water
  • Brush or non-scratch scrubber
  • Mild dish soap optional
  • Coarse salt optional
  • Towel
  • Cooking oil
  • Paper towel

Safety Precautions

  • Let the pan cool enough to handle safely but do not soak it.
  • Dry completely to prevent rust.
  • Avoid harsh detergents, long soaking, and dishwasher cleaning.
  • Use oven mitts if drying over heat.

Step-by-Step Instructions

  1. Step 1

    Clean soon after cooking

    When safe to handle, remove food and wipe excess grease.

  2. Step 2

    Rinse and scrub

    Use warm water and a brush or non-scratch scrubber.

  3. Step 3

    Use mild soap if needed

    A small amount of mild soap is generally fine for seasoned cast iron.

  4. Step 4

    Remove stuck food

    Use coarse salt as a scrub or simmer a little water to loosen stuck bits.

  5. Step 5

    Dry completely

    Towel dry, then heat briefly on the stove if needed to remove moisture.

  6. Step 6

    Oil lightly

    Rub a very thin layer of oil over the cooking surface and wipe away excess.

  7. Step 7

    Store dry

    Keep the skillet in a dry place with airflow.

Practical Example

Example: After frying potatoes, you rinse the warm skillet, scrub stuck bits with salt, dry it on low heat, wipe on a thin oil layer, and store it dry.

Common Mistakes

  • Soaking overnight
  • Putting it in dishwasher
  • Leaving water on the pan
  • Using too much oil after cleaning
  • Using steel wool on seasoned surface regularly
  • Storing with a wet lid

Troubleshooting

Food is stuck

Simmer water for a minute, scrape gently, then dry and oil.

The skillet looks rusty

Scrub rust, wash, dry, oil, and reseason if needed.

The surface is sticky

Too much oil was left on. Heat and wipe off excess.

Black residue appears

Clean gently, dry well, and maintain seasoning with thin oil layers.

FAQs

Can I use soap on cast iron?

A small amount of mild soap is generally okay for seasoned cast iron.

Can cast iron go in the dishwasher?

No. Dishwasher cleaning can strip seasoning and encourage rust.

Why did my cast iron rust?

Moisture is the common cause. Dry fully and oil lightly after cleaning.

Do I need to season it every time?

Not fully, but a thin oil wipe after drying helps maintain the surface.

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