This recipe came from the Coral Reef Restaurant that was in Sacramento CA. It was my favorite place to eat as a child. Even though they are no longer around I still enjoy eating the Polynesian foil wrapped chicken at home.
Cut chicken breasts into 1/8-inch cubes, scallions and set aside.
Combine ginger, sherry, 1 tablespoon soy sauce, salt and sugar in a bowl. Add chicken and water chestnuts to the mixture and marinade in the refrigerator for 20 minutes.
Meanwhile, prepare the foil. Place one drop of sesame oil and 1 drop of soy sauce onto each piece of foil. Place 3-4 pieces of chicken in the center of the foil. Fold foil in half to a triangle. Fold up two open sides to seal and crimp.
In a steaming basket lay a single layer of the foil pouches in the steamer. Cook for 5-8 minutes until juices seep out of the foil packs. Serve in the bamboo steamer set on a plate. Stack the foil triangles in a spiral on top of each other. Serve and enjoy!