Easy Sesame Chicken

Name: Easy Sesame Chicken
Ingredients: 2 boneless, skinless chicken breasts, cut into 1/2-inch pieces; 1 cup cornstarch mixed with 1 teaspoon salt; Peanut oil for deep frying; Sesame seeds for sprinkling; 2 large egg whites; 1 tablespoon soy sauce; 1 tablespoon Chinese rice wine or dry sherry; 2 large cloves garlic, minced; 2 teaspoons minced fresh ginger; 1 1/2 tablespoons toasted sesame oil; 1/2 cup chicken stock; 1/4 cup soy sauce; 1/4 cup honey; 2 tablespoons brown sugar; 1 tablespoon rice vinegar; 2 teaspoons cornstarch; 1 teaspoon chili sauce, for heat (optional)