Cleaning a cast iron skillet seems intimidating, but it’s genuinely simple once you know the right approach. Cast iron is prized for its durability and heat retention, which is exactly why it’s had a resurgence in home kitchens. That durability depends on proper care, though. Here’s how to clean, de-rust, and re-season your cast iron the right way.
Basic Cleaning
Clean your skillet after every use to keep it in good condition. Start by wiping it with a paper towel or cloth to remove loose debris. If food is stuck on, fill the skillet with hot water and let it sit for a few minutes to loosen it.
Next, scrub with a stiff brush or scraper, paying extra attention to any buildup. Rinse thoroughly with hot water, then dry completely with a clean cloth. Leaving any moisture behind is the fastest way to invite rust.
Removing Rust
Left untreated, rust spreads and can damage the pan’s cooking surface. Catching it early makes the fix much easier. Mix equal parts water and vinegar in a spray bottle, then spray the rusted area generously. Let the solution sit for at least 10 minutes before scrubbing with a stiff brush or steel wool. Rinse thoroughly with hot water and dry completely before moving on.
Re-Seasoning Your Skillet
Seasoning is the protective layer that gives cast iron its non-stick surface and prevents rust. It naturally wears down over time, especially with improper cleaning or moisture exposure. Re-seasoning restores it.
- Preheat your oven to 175°C (350°F).
- Rub a thin, even layer of vegetable oil or melted shortening over the entire surface.
- Place the skillet upside down on the middle oven rack.
- Bake for one hour, then turn off the heat and let it cool in the oven.
- Repeat 2–3 times for the best results.
Drying and Storing Properly
Once clean, dry the skillet with a cloth, then place it over low heat on the stovetop briefly to evaporate any remaining moisture. This extra step matters more than it seems — trapped moisture is the most common cause of rust.
Store it somewhere dry, never in a damp area or a closed, humid cabinet. Placing a paper towel inside the skillet while stored helps absorb any stray moisture. With consistent care, a cast iron skillet can genuinely last a lifetime.
5 Cast Iron Myths, Debunked
Soap ruins the seasoning. Not true. A small amount of mild soap is fine, as long as you rinse and dry thoroughly afterward.
Never put cast iron in the dishwasher. It’s not ideal, but an occasional trip won’t ruin it. Just dry it completely afterward to prevent rust.
Steel wool will ruin the pan. Steel wool is genuinely useful for rust and stuck-on debris. Use a light touch rather than aggressive scrubbing.
Never heat an empty skillet. Occasional empty heating won’t cause harm. Prolonged empty heating, though, can warp the pan and damage the seasoning.
Never use water to clean cast iron. Water is fine, as long as the pan is dried thoroughly afterward. A quick re-oiling after washing helps maintain the seasoning.
Looking for quick answers to other common cleaning questions? Check out our roundup of frequently searched cleaning questions for more.