Mix the sliced chicken breasts, scallions, garlic, sambal oelek, 2 tbsp of soy sauce, sake, sugar, sesame oil, salt and pepper together. Allow to marinate for 30 minutes.

Heat the vegetable oil in a wok, then add the chicken mixture. Cook just until the pink is gone from the chicken. Add the broccoli and continue to cook until all is heated through. Drizzle with soy sauce and serve with rice or noodles.