Korean BBQ Marinade (can be purchased at asian markets)
1 lb Sirloin or premium cuts of beef such as Rib Eye
[Korean markets may also carry pre-marinaded bulgogi for convenience]
Thinly slice the beef
Place been in marinade at least 1 hour prior to cooking (preferably longer, overnight would be best)
Place marinaded beef on grill until cooked through. (If you don't have a grill you can also pan fry the beef.)
It should not take more than a few minutes as the beef will cook quickly due to its thinness.
Serve the beef over rice and enjoy.