Method:
Heat oil in a large skillet or wok over medium high heat. Add ginger and garlic and cook until fragrant, about 30 seconds. Add pork, salt and pepper and stir-fry until cooked through, about 5 minutes. Add mushrooms and red onion and stir-fry until just softened, about 2 minutes. Add sherry, soy sauce and chili sauce and stir-fry for 2 minutes.
Add peppers, carrots, sprouts and celery and stir-fry until just tender, 1 to 2 minutes. Transfer pork mixture to a large platter. Arrange cilantro, lettuce and green onions alongside pork and serve with extra chili sauce on the side, if you like.