Cut the beef and eggplant into bite-sized pieces.
Slice vegetables such as onion and green onion.
Heat cooking oil in a pan and stir-fry the beef.
When the beef is half-cooked, add the onion and eggplant and continue to stir-fry.
Season with soy sauce, sugar, minced garlic, and pepper.
Stir-fry until all the ingredients are cooked.
Spoon the stir-fried beef and eggplant over rice.