Heat a pan of canola or avocado oil. Add ground pork, mirin, salt, pepper, and soy sauce. Let the ground pork brown and stop cooking once it is crispy and liquid has evaporated.
Before making the sauce, bring a pot of water to boil.
To make the sauce: Combine sesame paste or peanut butter with garlic powder, salt, pepper, chili oil, and sugar. Mix until thick and incorporated.
Once the water is boiling, cook the noodles following the instructions on the packet.
To prepare, place sauce at the bottom, followed by the noodles, the pork, and garnish with scallions and chopped peanuts.
Mix together and enjoy.