Slice the beef in thin strips before mixing with the soy sauce, cornstarch and sesame sauce. Leave to marinate.

Fry the cooked rice with the eggs. Season with the salt and pepper.

Fry the beef in an pan until half cooked before putting aside. Cook the sliced pineapple chunks in the pan until it's cooked through. Add the brown sugar before mixing with the beef and the sesame seeds.

Serve the beef with some sesame seeds on top alongside the rice.