Springy wheat noodles are bathed in a fiery chili oil sauce with peanuts, preserved vegetables, and a tingling numbing spice. This Sichuan street food classic is a bold, family-friendly bowl of heat and flavor.
Boil a large pot of water and cook wheat noodles according to package instructions until just al dente (springy and not mushy). Drain and rinse briefly under cold water to halt cooking.
In serving bowls, combine Sichuan chili oil, soy sauce, black vinegar, sugar, Sichuan peppercorn powder, garlic, and salt to create the sauce base. Stir to blend well.
Divide the hot noodles evenly among bowls and immediately toss with the sauce while the noodles are still warm to ensure each strand is coated.
Top the noodles with preserved mustard greens, roasted peanuts, scallions (thinly sliced), and cilantro, layering toppings for texture and color.
Serve immediately, tossing again at the table if desired, so sauce and toppings fully combine. Enjoy while hot for best texture and numbing effect.