Preheat a wok or large, heavy skillet.
Using a sharp knife, slice the pork diagonally across the grain into narrow strips.
Roll the pork in the cornstarch paste (maizena) until completely coated.
Rinse and rinse the pickled Szechuan vegetables, then rub dry with a piece of kitchen paper. Cut the pickled Szechuan vegetables into narrow strips of the same size as the pork.
Pour the Chinese clear soup or water into the wok or pan and bring to a strong boil. Add the pork and stir to separate cohesive strips of meat. Bring to a boil again.
Add the sliced pickled Szechuan vegetables and bring to a boil one more time.
Season to taste and drizzle with sesame oil. Serve hot garnished with scallions.
the Szechuan-style vegetables. Available in cans in Chinese supermarkets or possibly Asian specialty stores, it adds a spicy savory flavor and bite to dishes. Before use, rinse in cold water and store in the refrigerator.