1/4 cup teriyaki sauce (a recipe for the teriyaki sauce follows)
1/4 cup teriyaki sauce for brushing
Cut the chicken breasts into thin strips. Place in a bowl and pour the teriyaki sauce over the top. Stir to coat and refrigerate overnight.
Place 15 wooden skewers in a container and cover with water to soak overnight (this helps to prevent burning).
Preheat the grill over high heat. Thread the chicken strips onto the skewers. Place on then grill and immediately lower the temperature to medium. Grill for 3-5 minutes until chicken easily lifts from the grill.
Turn the chicken and brush with the remaining 1/4 cup of teriyaki sauce. Grill for an additional 3-5 minutes until the skewers are totally cooked.