Slice the beef thinly.
Prepare vegetables such as onion, carrot, and green onion.
Make the marinade with soy sauce, erythritol, minced garlic, sesame oil, and pepper.
Marinate the beef and vegetables in the sauce for 20 minutes.
Heat a pan, add oil, and stir-fry the marinated beef and vegetables.
Serve the cooked bulgogi on a plate.