Stir-frying
Stir-frying is cooking small, uniform pieces fast over very high heat with constant motion. The speed and the heat are the point — they brown food and drive off steam before it can stew, and at the top end give a wok its smoky wok hei.
01How it works
Speed and heat beat steam
Constant motion keeps bringing fresh surfaces onto the hottest metal and flicking steam away — food stirred non-stop cooks roughly twice as fast as food left alone. That speed is what lets the high heat brown and caramelize the outside while the inside stays crisp and fresh instead of stewing in its own water.
Pushed far enough in a well-seasoned wok you get wok hei, the savoury “breath of the wok” — aroma compounds from superheated oil reacting with the steel and the food. Lean proteins are often velveted first (egg white, cornstarch, sometimes a little baking soda) so they stay silky rather than seizing at that heat.
02How to do it right
Everything ready, pan screaming, small batches
Mise en place is not optional here. Once the pan hits the heat there is no time to chop or measure — cut everything uniform and bite-size, and pre-mix the sauce so it is ready to pour. Dry the vegetables well; wet ones dumped from the colander just steam.
Get the pan almost smoking with a high-smoke-point oil shimmering, so food gives a loud sizzle the moment it lands. Cook in batches. On a weak home burner the fix is a heavy, fully preheated pan and smaller batches — never more food at once, which only crashes the heat.
03Common mistakes
Why it came out watery and grey
- Crowding the pan. The temperature crashes and everything steams — soggy, grey, watery.
- Wet vegetables. Straight from the colander, they boil instead of fry.
- Heat too low. It stews rather than sears, and the colour and crunch never come.
- No mise en place. You scorch one thing while hunting for the next.
→Recipes that stir-fry
