Tender pork kidneys scored and seared over blistering heat, then tossed with snappy bamboo shoots in a glossy soy glaze. A bold stir-fry that rewards confident wok work.
This dish demands speed and high heat. The kidneys must be carefully cleaned—halved and stripped of their tough white core—then scored deeply so they curl like flowers when they hit the hot metal. Work in batches if necessary; crowding the pan will steam rather than sear.
Halve each kidney lengthwise and carefully excise the tough white core and outer membrane. Lay each half cut-side up and slice a deep diamond lattice into the surface, cutting about halfway into the flesh. Coat with cornstarch, wine, and a pinch of salt, then set aside for ten minutes. Meanwhile, cut the bamboo shoots into matchsticks.
Heat a wok over high heat until it begins to smoke. Pour in the oil, then immediately add the ginger. Stir-fry for roughly fifteen seconds until fragrant and just beginning to brown at the edges.
Add the kidneys in a single layer and let them sear undisturbed for thirty seconds to develop a crust. Toss vigorously for one minute until they curl up and turn opaque. Add the bamboo shoots, soy sauce, and sugar. Continue tossing for another minute until everything is coated in a glossy glaze.
Remove the pan from the heat. Fold in the scallions and give everything one final toss. Transfer immediately to a serving plate and serve hot with steamed rice.