White pork with pak choi
Slice the pork against the grain into thin strips about 5cm/2in x 1cm/1⁄2in. Combine the cornflour with 1 1⁄2 tablespoons water to make a paste.
Separate the outer fleshy stalks from the centre stalk of the pak choi and discard the centre stalk. Wash the outer stalks and diagonally slice into 8cm/3in pieces.
Swirl the oil around in a very hot wok. When the oil begins to smoke, add the pork and stir-fry for about 1 minute until the meat is seared. Add the pak choi, garlic and ginger. Stir-fry until the green leaves are bright and shrivelled, stirring constantly.
Add the salt, stock, sugar and sherry. When the liquid begins to boil, cover the wok and steam for 30 seconds or less on high heat, until the stalks are tender but still crisp.
Remove the meat and vegetables using a slotted spoon and set aside. Stir the cornflour paste into the remaining cooking liquid to make a light sauce. Serve immediately.