This is from a tiny stand in a hut in Adventureland in Disneyland of California. These are amazing and served with green onions on the side, we always ordered veggies and dip with them as well to cool our mouths down.
Combine all of the ingredients above and bring to a boil, adding cornstarch to thicken. Soak the bamboo skewers in water to avoid burning. Place 3 pieces of beef on each skewer and cook on the grill 3 minutes on each side or until desired doneness. Brush with sauce and serve.