Clean it while it’s still warm
Food releases far more easily right after cooking than once the pan has fully cooled. Run hot water into it and let it sit for a minute if anything’s stuck.
Soap doesn't strip it. Water left sitting does the actual damage.
The routine
1
2
Scrub with a stiff brush — soap is fine
A dish brush, chainmail scrubber, or non-scratch pad with a drop of dish soap removes food residue without touching the cured seasoning underneath. For anything really stuck, a plastic scraper or a pinch of coarse salt as light abrasive works well.
3
Dry it on the stove, immediately
Set it on a burner over low heat for a couple of minutes until fully dry. This is the step people skip, and it’s the one that actually matters — standing water is what causes rust, not soap.
4
Wipe on a trace of oil while it’s warm
A few drops, rubbed in and then wiped back off with a paper towel until the pan looks dry, not shiny. This maintains the seasoning layer over time — see the seasoning guide for how that layer is built in the first place.
What actually damages seasoning
| Myth | Reality |
|---|---|
| Soap ruins the seasoning | False — modern seasoning is a polymerized oil bond, unaffected by soap |
| Never let it touch water | Partly true — the problem is water sitting, not water contact |
| Metal utensils scratch it permanently | False — light scratches season over with normal use |
| The dishwasher will ruin it instantly | True-ish — prolonged soaking and detergent residue speed up rust, so it’s not worth the risk |
The one real rule: don’t let it sit wet. Everything else about cast iron cleaning is more forgiving than the internet makes it sound.
Frequently asked questions
Can you use soap on cast iron?
Yes. Modern seasoning is polymerized oil, which soap doesn’t dissolve. The no-soap rule comes from older seasoning methods and harsher, lye-based soaps that aren’t common anymore.
Is it okay to scrub cast iron with a metal scraper?
Generally yes. A metal scraper or chainmail scrubber removes stuck food, not the seasoning itself — unless you’re grinding directly against exposed bare metal with a lot of force.
Why does my pan feel sticky after cleaning?
Too much oil was left on after drying and it didn’t fully cure. Next time, wipe the pan down harder — it should look almost dry, with just a faint sheen.
If it’s already rusty
A daily cleaning routine prevents rust, but it won’t fix a pan that already has it. That needs a different process — see the rust removal guide.