Hen and potatoes in chilli sauce

What happens to a hen when it stops laying eggs? Normally, in Peru, it is killed and eaten, but its meat is tough because of its age, so it needs to be prepared in a way that will tenderize the meat. This recipe, with Spanish origins adapted to the Peruvian style, does just that and has remained in the repertoire for centuries, but the method is the basis of many similar dishes, using a variety of meat or fish. In all of them the essential ingredient in the sauce is chilli. This version is