Tenderize Chicken and cut into bite-size pieces. Marinade chicken in the oyster sauce overnight. Chop six cups of bok choy , 2 cups of peppers and 2 cups of spinach. Shred one carrot and thinly slice 6 cloves of garlic. In Large bowl mix together the chicken (in the marinade juices) with the vegetables, bamboo shoots, and egg whites. Spray a 9x12 or 10x10 inch baking pan with nonstick spray. Cover and bake at 350 degrees for 50 minutes. Remove from oven and let sit 10 minutes prior to serving. Meanwhile, for the sauce, bring 3 cups of chicken broth to a boil. Stir together 8 tablespoons of cold water and one cup of crushed ice until ice is nearly melted. Add the soy sauce and cornstarch and slowing pour into boiling broth stirring constantly to prevent sticking and to enhance thickening (approximately two minutes). Remove from heat, and drizzle over quiche. Enjoy.