Pork and Tofu with Watercress

Initial Preparation \nBegin by positioning the pork in a wok or skillet over a moderate heat setting. Allow it to cook and stir constantly until the meat is evenly browned on all sides, taking approximately 5 minutes to achieve this.\nNext, incorporate the soy sauce, water, ginger, and black pepper into the wok or skillet. Increase the heat to a higher level and bring the mixture to a rolling boil. \nOnce boiling, decrease the heat back down to a moderate level and cover the wok or skillet. Continue cooking until the meat is tender, requiring around 40 minutes to reach this stage.\nSubsequently, add the watercress and bean sprouts into the wok or skillet. Continue to cook until these ingredients are tender yet still retain a crisp texture, adding an additional 10 minutes to the overall cooking time.\nFinally, incorporate the tofu into the wok or skillet. Cover it again and cook for a further 5 minutes to allow the tofu to become fully incorporated with the other ingredients.