Hydrate the Noodles: Soak your uncooked noodles in a bowl of hot water according to the package directions (typically 5–10 minutes). Ensure they are tender but still have a slight bite (al dente).
Emulsify the Sauce: In a medium bowl or mason jar, whisk together the soy sauce, maple syrup (or brown sugar), sesame oil, tahini, peanut butter, rice vinegar, minced ginger, minced garlic, and hot chili flakes. Whisk until the texture is completely smooth and creamy.
Cold Rinse: Once the noodles are ready, drain them in a colander and immediately rinse under cold running water. This removes excess starch and ensures the noodles stay slippery and separate.
The Master Toss: Transfer the rinsed noodles to a large mixing bowl or pan. Pour the prepared sauce over the top and add the sliced green onions, sesame seeds, crushed peanuts, and edamame.
Coat Thoroughly: Gently toss the mixture until every strand of noodle is glistening and evenly coated in the nutty sauce.
Garnish & Serve: Dish the noodles into bowls while fresh. Add a final flourish of extra green onions and sesame seeds for color and crunch. Serve warm, at room temperature, or chilled.