Wok

Why the shape exists

A traditional wok sits in a ring over a burner producing many times the heat of a domestic hob. The flames wrap around the curved sides, so the whole surface is hot, not just the base — the bottom is searingly hot for cooking and the sides are cooler for holding food that is already done.

That geometry is why food is tossed up the sides: it is a way of moving things between temperature zones without taking them out of the pan.

On a domestic hob, a round-bottomed wok touches the ring at one small point. The base gets hot and the sides stay cool, so you have a small hot pan with high walls — which is worse than a flat pan of the same weight, not better.

Choosing one

Carbon steel

The right material. Light, heats fast, responds instantly, and seasons like cast iron. Inexpensive.

Flat-bottomed

Necessary for any hob that is not a gas wok burner. It sacrifices some of the geometry and gains actual contact with the heat.

Around 30–35cm

Big enough to toss in, small enough to lift with one hand when full.

A long wooden handle

For tossing. A second small helper handle opposite is useful for lifting.

Not non-stick

It cannot take the heat, and a wok that cannot get very hot has no purpose.

Not cast iron

Too slow to respond, and far too heavy to toss.

Seasoning and using one

1. Scrub a new carbon steel wok hard to remove the factory coating, then dry it on the heat.
2. Heat it until it discolours — blue and gold patches spreading from the centre — then wipe on the thinnest possible film of oil and let it smoke off. Repeat several times.
3. For cooking, get it genuinely smoking before anything goes in. This is not optional; a lukewarm wok steams.
4. Add oil around the rim so it runs down and coats the sides.
5. Cook in small batches, letting the wok recover its heat between them.
6. Clean with hot water and a stiff brush while warm, dry on the heat, and wipe with a trace of oil.

Being honest about the domestic limits

• A restaurant wok burner produces several times the power of a domestic ring. That gap cannot be closed by technique.
• The characteristic aroma of a well-made stir-fry comes from very high heat and brief flare-ups, and a domestic hob will not produce it.
• What you can do is compensate: smaller batches, a properly preheated pan, dry ingredients, and everything prepared in advance.
• On induction, a flat-bottomed wok works but only the base heats, so the sides do nothing. A heavy flat frying pan is a reasonable alternative.
• A wok is still excellent for deep-frying in a modest amount of oil, for steaming with a rack, and for large-volume tossing. Those uses are not affected.

Common questions