Chinese Chicken in Sweet and Sour Sauce

1 lb boneless skinless chicken thighs (skinless boneless breast substitution ok) 6 tablespoons cornstarch 1 large onion , diced 1 cup frozen peas and carrot[...]

1 lb ground chicken 4 scallions , finely chopped 1/2 cup flour 1 tablespoon soy sauce 1 tablespoon water 1/2-1 teaspoon sesame oil 1/4 teaspoon ground ginger[...]

2 stalks celery , sliced 2 large carrots , sliced 1 large green pepper , cut in strips 3/4 cup flour 2 -3 cloves fresh minced garlic 1 egg , beaten 1/2[...]