Cut the pork tenderloin into uniform strips. Sprinkle the turmeric and some black pepper over the meat and toss well. Set the mixed stir-fry vegetables, such as bimi, bok choy and bean sprouts, ready beside the stovetop.
Heat the tablespoon of mild coconut oil in a wok or large skillet. Fry the pork strips over high heat, quickly browning them on all sides. Remove the meat from the pan and set it temporarily on a plate.
Leave the pan on the heat and add the stir-fry vegetables. Stir-fry the vegetables over high heat for five to seven minutes until they are tender-crisp. Return the pork to the wok and toss everything briefly together so the flavors combine and the meat reheats.
Remove the pan from the heat. Sprinkle the dish with a pinch of Celtic sea salt, divide the pork and stir-fried vegetables over the plates and serve immediately.