Ingredients: For the Chicken Marinade: 1 lb (450g) boneless, skinless chicken breast or thighs, diced into bite-sized pieces 1 tablespoon soy sauce 1 tablespoon rice wine or sherry 1 teaspoon cornstarch 1 teaspoon sesame oil (optional) For the Sauce: 3 tablespoons soy sauce 1 tablespoon rice vinegar 1 tablespoon hoisin sauce (optional) 1 tablespoon sugar (brown sugar works well) 1-2 teaspoons cornstarch