Chicken soup is a traditional soup dish, which is mainly made of chicken, water and spices. Chicken soup, especially old hen soup, has always been famous for its delicious taste.
An old hen refers to a hen that reaches a certain age, but there is no exact definition to define a hen that reaches a certain age as an "old" hen. Generally speaking, hens that have been raised for more than 300 days and laid eggs, especially chicks, can be called old hens.