Slice the beef thinly and prepare.
Chop the green onion and beat the egg.
Heat cooking oil in a pan and sauté the green onion to make scallion oil.
Add the beef and stir-fry until cooked through.
Season with soy sauce, sugar, and pepper.
Place the cooked beef on top of the rice.
Make scrambled eggs and place them over the rice.
Drizzle mayonnaise on top to finish.