Hello, hairy eggs can be put in chicken soup, the flavor will not change, I remember when I was a child, the family boiled eggs will be put on another old hen stew, they said that the stew out of the soup can be drunk, and better, but I can not drink, too thick, but it should be able to be cooked in the same way, because when I was a child adults are often eaten this way, I hope that my answer can help you.