In a small saucepan over low heat, combine the
cornstarch, cold water, sugar, soy sauce, vinegar, garlic, ginger and ground
black pepper. Let simmer, stirring frequently, until sauce thickens and
bubbles.
Preheat oven to 425 degrees F (220 degrees C).
Place chicken pieces in a lightly greased 9×13
inch baking dish. Brush chicken with the sauce. Turn pieces over, and brush
again.
Bake in the preheated oven for 30 minutes. Turn pieces over, and bake for another 30 minutes, until no longer pink and juices run clear. Brush with sauce every 10 minutes during cooking.