
These savory-sweet soy caramel noodles are packed with tender shiitake mushrooms and golden strips of sweet potato for a deeply satisfying weeknight meal. The sauce clings to every strand, creating a glossy, umami-rich stir-fry that comes together fast in one wok.
In a medium bowl, whisk together the light soy sauce, dark soy sauce, Shaoxing wine, sesame oil, brown sugar, and water until the sugar dissolves.
Heat 3 tbsp vegetable oil in a wok or large skillet over medium-high heat. Add the julienned sweet potato and stir-fry for 4 to 5 minutes, tossing often, until just tender and lightly browned at the edges. Transfer to a plate.
Add the remaining 3 tbsp vegetable oil to the wok. Add the shiitake mushrooms and cook for 3 to 5 minutes, stirring frequently, until softened and lightly caramelized.
Increase the heat to high. Add the yakisoba noodles, cooked sweet potato, and prepared sauce. Toss continuously for 2 to 3 minutes, until the noodles are evenly coated and the sauce reduces to a glossy finish. Serve hot, topped with chopped cilantro and scallions if using.
If fresh yakisoba noodles are tightly packed, loosen them before adding to the wok so they stir-fry evenly. You can swap shiitake for oyster or cremini mushrooms, and use dry sherry if Shaoxing wine is unavailable. Store leftovers in an airtight container in the refrigerator for up to 2 days and reheat in a skillet for the best texture.