Cut the pork hind leg into bite-sized pieces.
Slice the onion, green onion, and carrot into thin strips.
In a bowl, mix gochujang (Korean chili paste), soy sauce, minced garlic, sugar, red pepper powder, and sesame oil to make the sauce.
Add the sauce to the pork and marinate for 15 minutes.
Heat cooking oil in a preheated pan.
Add the pork and vegetables, then stir-fry.
Once the meat is cooked and the vegetables have softened, it's ready to serve.