Source: Chef John

Ingredients

2 tablespoons oyster sauce 2 tablespoons soy sauce 2 tablespoons rice vinegar 4 teaspoons ketchup ¼ teaspoon sesame oil 1 teaspoon white sugar 1 tablespoon Sriracha sauce 1 tablespoon vegetable oil 6 cloves garlic, minced 1 teaspoon red pepper flakes, or to taste ¼ cup thinly sliced green onions ¼ cup chopped fresh cilantro, or to taste

Directions

  1. Whisk oyster sauce, soy sauce, rice vinegar, ketchup, sesame oil, sugar, and Sriracha together in a bowl.
  2. Heat vegetable oil in a skillet over medium-high heat. Add garlic and sizzle for 15 seconds. Add 1 teaspoon red pepper flakes and green onions; stir-fry for a just few seconds.
  3. Add noodles with some water they were cooked in.
  4. Add sauce and stir until noodles are coated. Cook until noodles are heated through and sauce starts to simmer, 1 to 2 minutes. Turn off the heat and stir in 1/4 cup chopped cilantro.
  5. Divide noodles into 2 bowls and garnish with more cilantro and red pepper flakes.