Equipment
Ingredients
Aromatics and Mushrooms
- 30 ml neutral oil
- 250 g cremini mushrooms, thickly sliced
- 150 g shiitake mushrooms, stemmed and sliced
- 15 g garlic, minced
- 15 g fresh ginger, peeled and finely minced
- 30 g scallions, thinly sliced, white and green parts separated
- 15 ml chili oil
Broth and Seasoning
- 1200 ml vegetable broth, low sodium preferred
- 60 ml light soy sauce
- 45 ml chinese black vinegar
- 15 ml dark soy sauce
- 3 g ground white pepper
- 10 ml toasted sesame oil
Noodles and Greens
- 300 g dried wheat noodles
- 150 g baby bok choy, halved and washed
Nutrition (per serving)
Method
Bring a large pot of water to a rolling boil for the noodles. Set aside while preparing the soup base.
Heat neutral oil in a heavy-bottomed pot or Dutch oven over medium-high heat. Add the cremini and shiitake mushrooms in an even layer. Let them cook entirely undisturbed for 4 to 5 minutes to develop a deep brown crust, which is essential for creating the beefy flavor. Toss and cook for another 3 minutes.
Reduce heat to medium. Add the minced garlic, minced ginger, the white parts of the scallions, and chili oil to the mushrooms. Stir constantly for 1 minute until highly fragrant.
Pour in the light soy sauce, dark soy sauce, and black vinegar, scraping up any browned bits from the bottom of the pot. Cook for 1 minute to lightly reduce the liquids and intensify the umami.
Pour the vegetable broth into the pot and stir in the ground white pepper. Bring the mixture to a boil, then reduce the heat to low and let it simmer gently for 10 minutes to allow the flavors to meld.
While the broth simmers, boil the wheat noodles in the large pot of water according to package directions. During the last 1 minute of boiling, drop the baby bok choy into the water with the noodles. Drain well in a colander.
Remove the broth from the heat and stir in the toasted sesame oil. Taste and adjust seasoning with additional vinegar or chili oil if desired.
Divide the drained noodles and bok choy evenly among four large serving bowls. Ladle the hot mushroom broth generously over the noodles. Garnish with the reserved green parts of the scallions.
Chef's Notes
- The entire foundation of this recipe hinges on the Maillard reaction of the mushrooms. Treating them like a steak by hard-searing them builds flavor compounds identical to roasted meats.
- Do not substitute regular white vinegar for Chinese black vinegar. Black vinegar offers a complex, woody, malty acidity that provides an authentic hot and sour backbone. Rice vinegar is an acceptable, lighter alternative.
- White pepper is essential for an authentic hot and sour profile. Unlike black pepper or chilies, white pepper hits the back of the throat with a sustained, warming heat that completely transforms the broth.
- If preparing ahead for a weeknight dinner, you can slice the mushrooms, mince the aromatics, and mix the wet seasonings in a jar up to two days in advance.
Storage
Refrigerator: 4 days — Store broth and noodles in separate airtight containers to prevent noodles from absorbing all the liquid and becoming mushy.
Freezer: 3 months — Freeze the broth only. Prepare fresh noodles and bok choy when ready to serve.
Reheating: Warm broth gently on the stove over medium heat until simmering, then pour over freshly cooked or chilled noodles.
