1 lb (450 g) beef suitable for grilling, sliced as thin as possible
3 green onions, sliced on the bias
4 button mushrooms (optional), sliced
½ onion (optional), thinly sliced
¾ cup soy sauce
¼ cup white granulated sugar
¼ cup (4 tbsp) sesame oil
4 tsp pepper
1–2 tbsp minced garlic
1 tbsp mirin (optional)
Combine all the ingredients in a big bowl. Marinate for at least 30 minutes, but marinating overnight will get the best flavor and tenderization.
30 minutes
Grill the beef.
Serve with rice.