Cornstarch — Chinese Velveting Technique

What it is

Not a separate ingredient but a defining application of cornstarch (full entry under Corn & Maize) in Chinese cooking: the velveting of meat and seafood.

How it works — Thin slices of chicken, pork, beef, or shrimp are coated in a marinade typically built on cornstarch plus egg white (and often rice wine, a little oil, sometimes baking soda), then briefly blanched in warm oil or simmering water before the final stir-fry. The cornstarch coating gelatinizes into a thin protective film that seals in moisture and shields the protein from the wok's fierce direct heat — yielding the silky, tender, almost slippery texture of good restaurant stir-fry. (A pinch of alkaline baking soda often rides along, raising the meat's surface pH to further tenderize, though that's a separate mechanism from the starch.)

Flavor profile

Neutral coating; its entire purpose is mouthfeel and moisture retention.

Culinary uses

Essential to countless Cantonese and broader Chinese dishes — moo goo gai pan, velvet chicken, shrimp with lobster sauce, beef stir-fries. Cornstarch also does double duty as the glossy sauce thickener stirred in at the end via a slurry. It can do silkiness and gloss; it cannot survive long simmering without thinning.

Regional variations

Core Chinese (especially Cantonese) restaurant technique; potato starch is sometimes substituted for an even glossier sauce.

Cultural & historical context

Velveting (shàng jiāng / "passing through oil") is a hallmark of professional Chinese kitchens, a technique distinguishing restaurant-quality stir-fry from the home version and embodying the cuisine's emphasis on controlled heat and texture (kou gan).

Reference notes

Tags: `corn`, `starch`, `technique`, `velveting`, `chinese`. Related ingredients: [Cornstarch], [Potato Starch], [Baking Soda]. Related cuisines: Chinese (Cantonese). Suggested links: → Cornstarch, → Stir-fry technique, → Velveting.