Lemony Chicken Orzo Soup with Dill

Name: Lemony Chicken Orzo Soup with Dill
Prep time: 20 min
Cook time: 40 min
Total time: 1 h
Cuisine: American
Ingredients: 1 left-over roasted chicken with at least 1-2 cups meat left on it. ( Or sub 1 lb chicken breast and 8 cups chicken stock-see notes); 10 cups water; 2 Bay leaves; 2 tsp salt, more to taste; ——-; 1 onion or leek, diced; 4 cloves garlic, rough chopped; 1 cup diced celery; 1 cup diced carrots; 1-2 tablespoon olive oil; 2 tsp toasted coriander seeds ( or ground is fine); ¼-½ Cups fresh lemon juice ( from 2 lemons) and zest from 1-2 lemons (1 tablespoon) Meyer lemons are nice; ¼ cup chopped dill, more for garnish; Garnish: Dollop Sour Cream (optional) and sprig of dill