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1
Place the jasmine rice in a dry wok over medium heat and stir continuously for 8–10 minutes without pause, so that every grain moves through the heat evenly and none scorches against the wok floor. For the first 3–4 minutes the rice produces a dry, clicking, rustling sound and smells of raw grain; at minute 5 the sound deepens and the aroma shifts to a warm, roasted note. Pull from the heat the moment every grain is an even, deep gold — the colour of good whisky — and the smell is distinctly nutty and grainy, then spread immediately on a cold surface so the residual heat of the wok does not carry the rice past that point.
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2
Once the rice is fully cool, grind it coarsely in a spice grinder or pound it in a mortar, stopping while it still has a perceptible, slightly gritty texture, because a fine powder will disappear into the dressing rather than giving the larb its characteristic bite. The finished powder should smell of warm roasted grain with a popcorn-like depth; anything flat or dusty has gone stale and must be discarded. Reserve the powder at room temperature until needed.
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3
Cook the meat according to its nature: pork shoulder and chicken thigh are poached briefly in lightly salted water, while beef and duck are stir-fried briefly over high heat, so that each cut surrenders its fat and juices in the way that suits its texture. In either case take the meat only just past pink — tender and barely done — because the residual warmth will continue working once it leaves the heat, and larb made from overcooked meat is dry and loses its succulence in the final toss.
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4
While the meat is still warm, dress it immediately with the fish sauce, lime juice, dried chilli flakes, fresh sliced chilli, and sliced shallots, tossing to combine, so the warm meat drinks in the dressing rather than sitting beneath it. This is where the dish lives or dies: add the toasted rice powder now, generously and in stages, tossing and tasting after each addition, because rice powder added to cold meat absorbs the dressing unevenly, its roasted aroma becomes imperceptible, and the texture turns dense and stiff. Stop when the salad feels pleasantly and perceptibly gritty — coarse, not cloying.
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5
Taste the dressed larb and read it against its correct profile: sour from the lime, salty from the fish sauce, hot from both the fresh and dried chilli, and deeply savoury from the meat and the roasted grain of the rice powder. If the balance reads too sharp, introduce a small pinch of palm sugar to soften the edge without letting any sweetness become dominant, then adjust lime and fish sauce as required until every element is in conversation.
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6
At the last possible moment before serving, add the torn mint, coriander leaf, and sawtooth coriander and toss once, so the herbs stay vivid green and faintly aromatic rather than wilting and darkening under prolonged contact with the acid dressing. Serve immediately, because the rice powder begins drinking the dressing and densifying the salad within 20 minutes.