Boil noodles until tender, then drain and set aside.
In a large heatproof bowl, combine garlic, green onion (white and green parts), and sugar.
Heat neutral oil in a pot on high until smoking, then carefully pour it over the garlic mixture.
Stir in gochujang, oyster sauce, soy sauce, and rice vinegar.
Pour hot broth into the bowl and mix well.
Add noodles and top with egg, sesame seeds, green onion (green part), and chili oil.
See full steps with tips & photos → https://theboatshedcafe.com/spicy-gochujang-noodle-soup/