Stir together the Momofuku Soy & Scallion Noodle sauce and dried scallion packets, tahini, dried ginger, garlic, sugar, Momofuku Rice Vinegar, Momofuku Toasted Sesame Oil, and Momofuku Chili Crunch until smooth.
Boil noodles for 4 minutes, then immediately drain and rinse with cold water until they are cooled. (Don’t shake out the noodles—some of the cold water will help thin the sauce.)
Toss rinsed noodles with sauce mixture, adding more water 1 teaspoon at a time until the mixture is pale in color and evenly mixed.
Top with sliced scallions, sesame seeds, crushed peanuts, and more Momofuku Chili Crunch, as desired.
