Finely chop the beef, onion, and green onion.
Heat cooking oil in a pan and sauté the beef.
When the beef is cooked, add the onion and green onion and stir-fry.
Add the rice and stir-fry with the other ingredients.
Season with soy sauce, salt, and pepper.
Add sesame oil and roasted seaweed flakes, then mix well.
Transfer the finished fried rice to a plate.