Chicken Soup without sauce

4 chicken breasts or 6 chicken thighs , cubed 2 medium sized onions , diced 5 medium carrots , cut the way you want 3 celery ribs , sliced 1 cup sushi rice or[...]

1 tablespoon vegetable oil 1 onion , chopped 1 stalk celery , chopped 1 carrot , chopped 2 tablespoons flour 2 cups chicken stock or 2 cups chicken broth 2[...]