Makes: 4 portions. Serves: 2 people. Preparation time: 80-180 minutes.
Slice the Chicken into small pieces, make 4 even groups and set aside. Peel and smash the 2 Garlic Cloves.
In a small saucepan, add the Soy Sauce, Mirin, Sake (or Sherry), Brown Sugar, Garlic and Ginger and bring to a boil for 6 minutes until it thickens. Reserve about 2-4 tablespoons of the sauce for later. Marinate the Chicken pieces in a bowl with this sauce and chill for 1-4 hours. Soak 4 wooden or bamboo skewers in cold water for the same time.
Preheat a grill or broiler. Thread the marinated Chicken onto the skewers, alternating with a piece of Scallion. Cook on one side for 3-4 minutes, then turn them over and cook another 3-4 minutes. Check that they are cooked all the way through.
Serve 2 skewers per person with some of the extra warmed sauce. Present with fancy "hashi" (Japanese chopsticks).