In a bowl, combine the chicken, soy sauce and cornstarch. Mix well. Set aside until ready to use.
½ pound chicken breast or thigh fillet, 1 tablespoon soy sauce, 1 tablespoon cornstarch
Bring 8 cups of water into a rolling boil over high heat. Add salt. Add the spaghetti noodles and cook until almost al dente. Reserve ½ cup of the pasta water and discard the rest. (drizzle some oil to the pasta if they are too sticky).
9 ounces spaghetti, 8 cups water, 1 tablespoon salt
In a wok or large pan, heat oil over medium heat. Add the peanuts and cook, stirring regularly until they turn golden brown. Using a slotted spoon, remove the peanuts from the oil and transfer them in a bowl. Set it aside for later.
3-4 tablespoons vegetable oil, ½ cup raw peanuts
In the same pan, sauté onions and garlic until limp and aromatic. Add the mushrooms and cook for half a minute. Add the chicken pieces and stir-fry until cooked through and slightly charred.
1 medium onion, 3 tablespoon garlic, ½ cup shiitake mushrooms
Add the rest of the ingredients for the sauce to the pan and stir until it forms a thick sauce. Add some (¼ - ½ cup) pasta water to deglaze.
½ - 1 teaspoon chili flakes, ¼ cup oyster sauce, ¼ cup Char Siu sauce, 2 tablespoons peanut butter, 1 tablespoon soy sauce, 1 tablespoon sesame oil, 1 tablespoon brown sugar
Add the cooked pasta and toss to cover it with sauce cook for a minute or two to let the pasta cook until al dente and absorb the flavors of the sauce. Turn the heat off. Add back the roasted peanuts and toss again.
Transfer to serving pan or plates. Garnish with chopped green onions.
green onions