Cut the pork leg into bite-sized pieces.
Slice the onion and green onion, and mince the garlic.
Make the marinade by mixing soy sauce, sesame oil, sugar, black pepper, and minced garlic.
Add the marinade to the pork and let it marinate for 30 minutes.
Heat some cooking oil in a pan and stir-fry the pork and vegetables.
When the pork is cooked, drizzle with sesame oil and sprinkle with sesame seeds to finish.