Dice the chicken into 1" x 1" dice. Reserve until marinade is ready.
Preparing the Marinade
Grate the ginger and garlic on a microplane. This will release the oils in the ginger and garlic and they will be small enough to blend into the marinade.
In a bowl, combine the ingredients (except the chicken) and whisk to combine and dissolve the sugar. (this may take a few minutes)
Add the chicken to the marinade and mix well to combine.
Marinate for 1 to 4 hours.
Grilling the Yakitori
Preheat a charcoal grill, a gas grill will work also. Charcoal is traditional for Yakitori.
Skewer the cubed chicken onto skewers that have been pre soaked in water.
Skewer 5-6 pieces on a 10" skewer.
Grill the chicken over the coals, basting with the marinade while turning them.
When the Yakitori is done, remove from the grill. Serve with brown or white rice. Enjoy!