Cut the beef brisket and vegetables into bite-sized pieces.
Prepare vegetables such as onion, carrot, green onion, and mushrooms.
Add cooking oil to a pan and stir-fry the beef brisket.
When the meat is half cooked, add all the vegetables.
Add seasonings such as soy sauce, sugar, minced garlic, pepper, and sesame oil, then stir-fry together.
Cook over medium heat until all ingredients are cooked through.
Finish by sprinkling sesame seeds on top.