Cook noodles according to package instructions.
Prepare the sauce: In a bowl, mix soy sauce, black vinegar, chili flakes, chili powder, minced garlic, and chopped green onion together.
In a small saucepan, heat 2 tbsp of oil. Add hot oil to the sauce.
Add cooked noodles to the chili oil. Mix until well combined.
Add an egg on top and garnish with green onion and sesame seeds. Serve hot and enjoy!
