Cut pork tenderloin into narrow strips (see note 3). Then, mix them with light soy sauce, Shaoxing rice wine, cornstarch, salt, and water. Once no more liquid can be seen, rub in oil to coat the meat evenly.
Mix the sauce
In a small bowl, mix black rice vinegar, Shaoxing rice wine, light soy sauce, dark soy sauce, sugar, cornstarch, and water. Set aside.
Sear the pork
Heat a wok over high heat until very hot, then pour in 2 tablespoons of oil (if using non-stick cookware, be sure to add oil first then heat it). Add the marinated pork. Toss to sear it quickly. Once the meat turns pale, transfer out to a plate for later use.
Stir-fry the vegetables
Add the remaining 1 tablespoon of oil to the empty wok. Sizzle pickled chili, garlic, and ginger until fragrant. Then, put in wood ear mushrooms, bamboo shoots and carrots. Stir-fry until they just begin to wilt.
Combine the dish
Return the pork to the wok. Stir fry for 30 seconds or so. Turn the heat down to low then pour in the sauce (stir well beforehand to avoid starch sitting at the bottom).
As soon as the sauce starts to thicken, turn off the heat and stir in scallions. Serve immediately with steamed rice.
Notes
1. The original version calls for Sichuan style pickled chili. You may also use these to substitute:Pickled Chilli Garlic Sauce, other types of pickled chili (e.g. Spanish or Italian ones), or fresh chillies. Adjust the quantity as needed, as they vary in heat levels.2. Read my post on Wood Ear Mushrooms & How to Rehydrate to learn more. You'll need around 8 gram of dried ones to get the suggested amount.3. To make cutting the pork more efficient, briefly freeze the meat until semi solid, or wet your knife with water when slicing to avoid sticking.