6 ounces long dried noodles, preferably curly or ruffled, such as Shangxi planed noodles, mafaldine or long fusilli
2 tablespoons low-sodium soy sauce
2 tablespoons Chinese sesame paste (may substitute tahini)
1 1/2 tablespoons store-bought or homemade chile oil, preferably with chile flakes included, such as Chinese chili crisp
1 tablespoon toasted sesame oil
2 teaspoons Chinese black vinegar (may substitute balsamic vinegar)
2 scallions, trimmed and thinly sliced, for serving
2 tablespoons toasted sesame seeds, for serving