Start by bringing a large pot of salted water to a rolling boil. Add your favorite noodles and cook according to package instructions, around 4–6 minutes until tender but firm. Drain and rinse under cold water.

In a heatproof bowl, combine minced garlic, chili flakes, soy sauce, vinegar, sugar, sesame oil, and a pinch of salt. Stir until well incorporated.

In a small saucepan, heat chili oil over medium heat until it shimmers. Carefully pour it over the garlic mixture, stir quickly, and let it cool slightly.

Add the cooled noodles to the warm garlic chili mixture. Toss thoroughly with chopsticks or tongs until evenly coated.

Sprinkle chopped scallions and sesame seeds over noodles. Serve immediately in warm bowls and enjoy while steaming hot.