How to Clean a Carbon Steel Wok (Without Ruining the Seasoning)

There’s a persistent online mythology around cleaning carbon steel and cast iron pans that’s a mix of bad cookware advice and inherited folklore from grandparents who never wanted to teach you the easy way. You’ve probably read that you can never use soap, that water will ruin the pan, that you have to “season” every time you wash, that you need salt and oil scrubs. Most of it is wrong, or at best, vastly overcomplicated.

The actual truth: cleaning a well-seasoned carbon steel wok takes about a minute, requires no special tools, and is hard to mess up if you follow a few simple rules. Here’s the whole protocol.

The basic daily routine (3 steps, 60 seconds)

Right after you’re done cooking, while the wok is still warm but no longer screaming hot:

1. Run hot water into the wok and scrub the inside with a stiff non-metal brush — a bamboo wok brush is the classic tool, but a stiff plastic scrub brush works fine. Knock loose any stuck-on food. Don’t be precious with the seasoning; a properly seasoned wok stands up to vigorous scrubbing.
2. Dry the wok on the stove over low-to-medium heat for about 60 seconds, until every drop of water has evaporated. This is the most important step. Air-drying a carbon steel wok is the single fastest way to get rust spots.
3. Rub a few drops of neutral oil over the inside with a paper towel. You want a film so thin the wok looks dry, not greasy. This prevents flash rust during storage and reinforces the patina.

Hang it up. That’s it. The whole thing should take less time than loading a dishwasher.

Can I use soap on my wok?

Yes. This is the single most common myth in wok care and the one that gets repeated despite being thoroughly untrue.

Modern dish soap doesn’t damage seasoning. Old-fashioned lye soap, the kind your grandmother used, did — it would saponify the polymerized oil that makes up the patina. Modern detergents are pH-neutral and rinse cleanly. Use a drop if you have stuck-on grease, fish smells, or anything else stubborn. Your patina will be fine.

That said, you usually don’t need soap. Hot water and a brush handle 95% of cleanup, and skipping soap is a slightly nicer ritual — you’re not standing at the sink waiting for suds to rinse off. But there’s no harm in using it.

What you should never do

• Never put a hot wok directly into cold water. Thermal shock can warp or crack the metal. Let it cool for at least 5 minutes before adding water.
• Never put a carbon steel wok in the dishwasher. Detergent + 8 hours of moisture exposure will strip the patina and rust the bare iron. This is non-recoverable damage in a single cycle.
• Never air-dry it. Bare iron flash-rusts within hours, especially in humid climates. Always finish with heat.
• Don’t use steel wool unless you’re stripping the wok intentionally. It will scratch through the patina to bare metal. Reserve it for fixing rust spots.
• Don’t store it with a lid on. Trapped moisture condenses on the inside surface. Hang the wok open to the air.

How to deal with stuck-on food

If something is welded to the bottom of your wok — burnt sugar from a sauce, stuck-on protein, a forgotten layer of fond — don’t go straight to scraping. The fastest fix:

1. Fill the wok with about an inch of water.
2. Bring it to a boil on the stove.
3. Use a wooden spatula or your bamboo brush to gently work at the stuck bits. They’ll release in 30 seconds.
4. Dump the water, then proceed with the normal 3-step routine.

If that doesn’t work, use a stiff brush and a drop of soap. If that doesn’t work, you may need to scrub harder than usual — your patina is durable enough to take it.

How to fix rust spots

Orange or reddish-brown patches on the cooking surface mean the wok was stored with moisture on it. The fix is straightforward:

1. Scrub the rust off with a stiff bamboo brush or a plastic scouring pad. Steel wool is fine here because you’re stripping anyway.
2. Wash with hot water and soap.
3. Dry the wok thoroughly on the stove.
4. Re-season the affected spot: get the wok hot, wipe a teaspoon of neutral oil over the bare metal with a paper towel held in tongs, and let it smoke for 30 seconds. Repeat once or twice.

For widespread rust (the wok got left in the sink overnight, or you found one in the back of a cabinet after a few years), strip the whole thing and re-season from scratch. We have a complete seasoning guide if you need it.

When food keeps sticking

If you’re cleaning the wok properly but food still sticks during cooking, it’s almost never a cleaning problem — it’s a temperature problem. A properly preheated wok will skitter water droplets across its surface like ball bearings (the Leidenfrost effect). If droplets just sit and boil, the wok isn’t hot enough yet. Wait another 30 seconds.

That said, two cleaning-adjacent things can make sticking worse:

• Too much oil in the after-clean coat. A glossy, greasy film attracts dust and can polymerize into a sticky layer next time you cook. Wipe the oil thinner than you think you should.
• Soap residue left behind. If you’ve washed with soap, rinse thoroughly. A film of detergent on the cooking surface will make the next cook stick.

Watch Kenji do it

Want to see the whole routine in real time? Here’s J. Kenji López-Alt cleaning his wok exactly the way I just described. Two minutes, no drama.