Zha (炸) — Chinese Deep-Frying: Temperature Stages and Double-Fry

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Chinese deep-frying (炸, zha) in a wok differs from Western deep-frying primarily in temperature management across multiple frying stages. Many Chinese fried preparations require two frying passes at different temperatures — a low first fry to cook through, a high second fry to crisp — called fu zha (复炸, double-fry). This achieves the paradox of a thin, shatteringly crisp crust over a fully-cooked, juicy interior. It is the technique behind Cantonese crispy pork, whole fried fish, spring rolls, and taro dumplings.

Chinese deep-frying at its best produces the same textural joy as the very best fish and chips or Southern fried chicken — the shattering crust over yielding interior — but applied across an enormous range of proteins, doughs, and vegetables.