Some people swear by chicken broth as a cure-all. Certainly Jewish traditions make a lot of it, and from them also Polish cuisine makes a big deal out of rosol, as they call it. It is a useful pick-me-up while on a liquids only fast, and it is very useful to tide oneself over between meals as an alternative to tea or coffee.
For those eating chickens, the best chickens to use are older ones, like an old rooster who has served his days making hens happy and waking your neighbours up in the morning while you blithely sleep through it. He has tough meat and is unpalatable. His Chicken Kiev would be more of a Chicken Maydan, but boiled into broth he gives you more microelements than Mendeleyev himself wrote about in the song “On the road to Mendeleyev, where the flying fishes playev”.
The Mexican recipe for chicken soup is rumoured to start with the same four words as every recipe in the Mexican recipe book, accordingly to the old joke. If you don’t know what those four words are I will not ruin the tone here by mentioning them, but maybe someone will show their knowledge of the history of comedy by mentioning them in the comments section below. (Come on, I have to do something to encourage readership participation round here!)