Place the pork chops between two sheets of plastic wrap, gently pound to a thickness of about 1/4-inch, then cut them across the grain into thin strips.
Transfer to a mixing bowl, drizzle with sesame oil and 1 tablespoon of vegetable oil. Add the garlic, ginger and a few grinds of black pepper, combine well and set aside for 15 minutes.
While the pork marinates, combine the hoisin sauce, rice vinegar, soy sauce, and oyster sauce in a measuring cup or small bowl and set aside.
Wrap the tortillas tightly in foil and place in a warm oven (275°F) to soften.
Preheat a wok or large frying pan over medium-high heat, add 1 tablespoon of vegetable oil and swirl to coat the pan.
Add the eggs and stir-fry until soft-scrambled, about 30 seconds. Transfer to a small bowl, break up into small pieces and set aside.
Return the pan to the stove, add the pork and stir-fry until all traces of pink have disappeared, 2 to 2-1/2 minutes. Transfer to a plate and set aside.
Coat the pan with another tablespoon of vegetable oil and add the mushrooms. Stir-fry until lightly browned, 2 minutes.
Add the coleslaw mix and stir-fry just until wilted, 1 to 2 minutes. Stir in the sauce and return the pork to the pan.
Stir in the eggs and scallions, remove from the heat and transfer to a serving bowl.
Serve the moo-shu family-style, letting each person fill their tortillas and roll as desired.
Tips for Making This Recipe
Ready-made coleslaw mix is available in the produce section of most supermarkets, but you can replace it with thinly shredded cabbage and one large carrot cut into julienne strips.