Slice about a pound of beef in very thin strips (you can also use pork). In a bowl or plastic ziplock bag, mix together 6 T good-quality soy sauce, 3 T sesame oil, 3 T water or rice cooking wine, and 2-3T sugar. You can also slice thin several green onions and dice 2-3 cloves of garlic and add this to the marinade. Marinate the meat in this (in fridge) for at least an hour (2 or 3 would be better). Then, remove from marinade and broil until meat is cooked through.
This is a Korean recipe, so you want to serve this with a good quality white rice and, if you like it, kimchi. It is also good with a green salad on the side.