This is one of the family's favorite soup. I especially love it because this is the only way I could feed my little girl with celery. I usually make this on rainy days when the flu is up or on allergy flare-ups. My secret? I grind the celery stalk in a blender till they're just juice. If you have a juicer, better. Boil the chicken, bones-in, till it's tender with the celery juice, ginger and thyme. Then, add in mushrooms and carrots. Salt and pepper to taste. Let simmer till done.
Try it. It's really worth making it. It's good and tasty. The kids love it.