Reader-supported: we earn a commission on some links, at no extra cost to you. It never changes our picks. How this works
Cast Iron SkilletsProblem / fix

How to Clean a Cast Iron Skillet: A Step-by-Step Guide

Clean your cast iron skillet while it is still warm. Rinse with hot water and scrub with a stiff brush. For stuck food, simmer water in the pan. Dry it thoroughly, then rub a thin layer of oil over the entire surface. Heat until smoking, then let cool.

Our top pick
Lodge 10.25-Inch Cast Iron Skillet
Lodge 10.25-Inch Cast Iron Skillet
★★★★★ 4.7
Check price on Amazon
Read the full guide →

Clean your cast iron skillet while it is still warm. Rinse with hot water and scrub with a stiff brush. For stuck food, simmer water in the pan. Dry it thoroughly, then rub a thin layer of oil over the entire surface. Heat until smoking, then let cool.

  • Clean while warm, dry thoroughly, and oil after each use.
  • Use coarse salt or chainmail for stuck food, not steel wool.
  • Remove rust with vinegar or baking soda, then re-season.
  • Avoid acidic foods and dishwasher to protect seasoning.

Why does my cast iron skillet rust or stick?

Rust forms when moisture sits on bare iron. Sticking happens when the seasoning layer is weak or missing. Seasoning is polymerized oil that creates a nonstick surface. Acidic foods like tomatoes can strip that layer. Soap is often blamed, but modern dish soap is mild and safe. High heat can burn off seasoning if the pan is empty. Abrasive scrubbing with metal pads can also remove it. Each of these causes has a simple fix.

How do I clean a cast iron skillet after everyday use?

Start by scraping out food with a spatula or brush. Rinse the pan with hot water, no soap needed. If food sticks, fill the pan with water and bring to a boil. Use a chainmail scrubber or coarse salt to lift residue. Avoid steel wool, which scratches the surface. Dry the pan completely with a towel or on low heat. Apply a thin coat of oil and heat until it smokes. Let it cool, then store in a dry place.

How do I remove rust from a cast iron skillet?

For light rust, scrub with a paste of baking soda and water. Use a stiff brush or fine steel wool. Rinse and dry immediately. For heavy rust, soak the pan in a 50/50 vinegar and water solution for an hour. Scrub, rinse, and dry thoroughly. Then re-season the pan. To re-season, coat with oil and bake upside down at 400°F for an hour. Repeat if needed. Rust is not a death sentence; it is fixable.

How do I strip and re-season a cast iron skillet?

Stripping removes all old seasoning and rust. Use the oven's self-cleaning cycle or a lye bath. Place the pan in a trash bag with oven cleaner and leave for 24 hours. Rinse and scrub off residue. Wash with soap and water, then dry. Apply a thin layer of flaxseed or grapeseed oil. Wipe off excess oil with a paper towel. Bake at 450°F for one hour, then let cool in the oven. Repeat three to four times for a strong base.

How do I prevent rust and maintain seasoning?

Dry your skillet immediately after washing. Never let it air dry, as water causes rust. Store in a dry place, not in a damp cabinet. Add a paper towel inside to absorb moisture. Use your skillet regularly; cooking builds seasoning. Avoid cooking acidic foods for long periods. If you do, re-season afterward. Heat the pan slowly to prevent warping. With care, a cast iron skillet can last generations.

Common questions

Can you use soap on cast iron?

Yes, modern dish soap is safe. It won't strip seasoning if used sparingly. Rinse thoroughly and dry immediately.

How do you clean a cast iron skillet with salt?

Pour coarse salt into the pan and scrub with a paper towel or brush. Salt acts as a gentle abrasive. Rinse and dry.

What is the best oil to season cast iron?

Flaxseed oil creates a hard, nonstick layer. Grapeseed and vegetable oil also work well. Avoid butter or olive oil, which smoke at low temperatures.

Can you put cast iron in the dishwasher?

No. Dishwasher detergent is too harsh and water causes rust. Always hand wash.

How do you remove burnt food from cast iron?

Fill the pan with water and simmer for 5 minutes. Scrape with a spatula. For stubborn bits, use a chainmail scrubber.

Is it safe to use steel wool on cast iron?

It can scratch the surface, but it's okay for rust removal. Use it sparingly and re-season afterward.

Why does my cast iron skillet smoke when heated?

Smoking occurs when oil reaches its smoke point. This is normal during seasoning. It means the oil is polymerizing.

How often should I re-season my cast iron skillet?

Re-season when food starts sticking or rust appears. Some cooks do it monthly, others yearly. It depends on use.

More in this topic

More in Cast Iron Skillets

See the full guide →