1 lb (450g) beef, sliced as thinly as possible
1 medium onion
1/4 cup sugar, divided
2 cloves garlic, minced
3 tbsp sesame oil
2 tbsp sake (or rice wine)
1/4 cup soy sauce
1 tbsp rice vinegar
5 – 6 green onions, cut into 2″ pieces
Spread beef slices in thin layers and sprinkle with 2 tbsp sugar. Allow to sit for 15 – 20 minutes.
Meanwhile, peel the kiwi and onion and blend them in a food processor until smooth. In a small bowl, mix garlic, soy sauce, sesame oil, sake, remaining 2 tbsp sugar, and rice vinegar.
Add the two mixtures and the green onions to the meat and mix well. Marinate for at least 4 hours, or overnight.
When ready to cook, remove meat and green onions from the marinade and cook on a hot grill or in a frying pan. It should cook very quickly, in just a moment or two.
Serve with rice, or in a lettuce wrap!