Nanning Laoyou Fish

A fish rendering of Nanning's emblematic laoyou ("old friend") flavor, the local taste best known through laoyou rice noodles and laoyou fried noodles. The flavor is built on the city's defining trio — fermented black beans, sour pickled bamboo shoot, and chili with garlic — a sour-hot, pungent profile that Nanning cooks apply across noodles, meats and fish alike. Made with fish, it gives the same beloved seasoning a tender, flaky form, and shows up on home tables and at eateries across the city.

The fish is browned outside and silky within, its flesh shot through with a sauce that hits sour first, then hot. Fermented black beans give a dark, salty pungency; the sour bamboo shoot brings its unmistakable funky-sour edge and a crisp bite; garlic and chili round it into something fierce and appetizing. It is unabashedly strong-smelling — the douchi and sour bamboo see to that — and that aggressive aroma is exactly the draw. Slick with chili oil, finished with cilantro, it is a sauce-forward, rice-demanding dish.

The braise is the technique, and timing of the aromatics is everything. The fish is salted and pan-fried first until both sides set golden, which firms the flesh and keeps it from breaking up in the wok. Then the laoyou base is built: fermented black beans, garlic, ginger, sour bamboo shoot and chili are bloomed in moderately hot oil until fragrant — the douchi must fry to release its pungency without burning. The fried fish goes back in with a little stock and is braised so the sauce penetrates, a final handful of red chili and cilantro stirred through at the end. Fry the base too long and the douchi turns bitter; too short and the sour-hot punch never develops.