The wok in Mekong cooking appears primarily in Chinese-influenced preparations — in the Yunnan Province sections of the book and in Vietnamese Chinese-influenced dishes — and the technique mirrors what Dunlop describes in the Chinese database: extremely high heat, rapid movement, small quantities of protein and vegetable per batch, and the seasoning added at the edges of the wok rather than directly onto the food. The distinctive feature in the Vietnamese/Mekong context is the fish sauce addition: fish sauce hitting a near-dry hot wok produces an immediate intense caramelisation — the Maillard reaction on fish sauce's amino acids.
- All ingredients prepared before the wok reaches temperature — there is no time to prepare once cooking begins - The wok must smoke before any ingredient is added - Protein goes first, cooked 80% through before vegetables are added - Vegetables in order of density: hardest first (carrot, green beans), softest last (bean sprouts, herbs) - Fish sauce added at the edges of the wok, not directly onto the food — the liquid hits the hottest surface of the wok and caramelises instantly before being tossed through the dish - The entire process: under 4 minutes for a two-person serving Decisive moment: The fish sauce addition at the edges. When fish sauce hits the smoking-hot edge of the wok, the Maillard reaction on its amino acids is immediate — a burst of complex, caramelised aroma that would not occur if the fish sauce were added directly to the cooler food mass. This technique is the wok hei equivalent for Southeast Asian seasoning: the highest-heat surface is used for the maximum flavour development.
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