Cut the pork jowl into bite-sized pieces.
Slice the onion and green onion thinly.
Cut the kimchi into bite-size pieces.
Heat oil in a pan and stir-fry the pork jowl.
Add the sliced onion and green onion to the pork and stir-fry.
Add the kimchi and stir-fry together.
Season with red pepper powder, soy sauce, and pepper.
When everything is well cooked, transfer to a plate.