A classic Korean beef dish with a savory and sweet taste.
Slice the beef thinly.
Cut onion, green onion, and carrot into bite-sized pieces.
Mix soy sauce, sugar, minced garlic, sesame oil, and black pepper to make the marinade.
Add the marinade to the beef and vegetables, and let it soak for 20 minutes.
Heat oil in a pan and stir-fry the marinated ingredients until cooked.