Cut the pork belly into bite-sized pieces.
Slice the onion, green onion, and garlic.
Make the sauce using gochujang, soy sauce, sugar, chili powder, and other ingredients.
Place the pork belly in the pan and stir-fry over medium heat.
When the pork is halfway cooked, add onion, green onion, and garlic and stir-fry.
Add the sauce and stir-fry until the pork is fully cooked.
Place the finished Pork Belly Stir-fry on a plate.