In a bowl, whisk together the parmesan cheese, milk powder, gochujang, soy sauce, chicken bouillon, rice vinegar, garlic powder, sugar, toasted sesame oil, and egg yolk (or 2 for extra richness). Mix until well combined.

Bring a pot of water up to a boil and cook your noodles according to the package instructions. Save 1/2 cup of the noodle cooking water and drain the noodles, leaving them in the pan.

Stir 1/4 cup of the hot noodle water into the sauce then add the sauce to the noodles in the pot, tossing to coat. Add more of the hot reserved noodle water as needed, while mixing, over low heat, until the sauce is smooth and creamy and clings to the noodles. Remove from the heat and enjoy!