Iron pots will precipitate Fe2+ Fe3+. The soup is not as good as casserole, and the iron pot is nutritious.

Casserole takes longer than iron pot stew because of its slow heat conduction and balanced temperature, and its taste is better than iron pot stew.

Stewing chicken in iron pot takes a short time and tastes bad. Casserole takes a long time and tastes good. Nutritionally, they are all the same, and there is no iron deficiency in the iron pot. It is better to use casserole instead of iron pot for chicken stew soup, because iron pot will bring rust flavor into chicken soup, so it is not as good as casserole to gather fresh flavor and add delicacy.