Wok-tossed noodles seared over ferocious heat with spring onions, beansprouts, aromatic garlic, and savoury seasoned sauce.
Mix the sesame paste, chili oil, vinegar, soy sauce, and peppercorn powder in a bowl.
Fry the pork with the ya cai in oil until crisp.
Cook the noodles and drain, saving a little noodle water.
Toss the noodles in the sauce, then top with the pork.
Loosen with a splash of noodle water and serve.