Prepare the Sauce: Finely mince the garlic and ginger, then place them in a heatproof bowl. Add chili oil, chili flakes, salt, and sesame seeds to the bowl, mixing everything together.

Heat the Oil: In a small pan, heat the granola or peanut oil until it begins to smoke. Carefully pour the hot oil over the garlic and ginger mixture, stirring well to combine.

Finalize Sauce: Add soy sauce, dark rice vinegar, and pure sesame oil to your bowl. Stir until well mixed.

Cook Noodles: Boil udon noodles in a pot of water until soft yet chewy, about 3-5 minutes. Drain and toss in the prepared chili garlic sauce.

Garnish: Serve the noodles topped with a fried egg (or tofu), sliced spring onion greens, and black sesame seeds.