Cut the pork into bite-sized pieces.
Slice the onion, carrot, and green onion.
Prepare the sauce by mixing gochujang (Korean red chili paste), gochugaru (Korean red chili flakes), soy sauce, minced garlic, sugar, and sesame oil.
Mix the pork with the sauce and marinate for 10 minutes.
Heat cooking oil in a pan and stir-fry the pork.
Add the vegetables and stir-fry together.
When cooked through, finish with a sprinkle of sesame seeds.