6 Chicken pieces; -OR-
1 sm -Whole chicken
-- skin removed
3 qt Water
1 Onion; finely chopped
2 Celery stalks
-- finely chopped
1 Carrot (more if desired)
-- finely chopped
2 tb Cornstarch (optional)
-- dissolved in:
1/3 c Cold water
2 Sprigs fresh rosemary (3")