Spent Hen Help
I'm going to second the stock recommendation. I bought an old stewing hen at the farmer's market and made stock and coq au vin. The meat was very stringy and not particularly good. But the coq au vin sauce was amazing! I did have pieces of "regular" chicken in the mixture, too.
Also used a stewing hen for stock, which was probably the best stock I've ever made!
I assume that you mean a hen that is too old to lay. If that is the case, the birdie will be very tough, but will have great flavor. I have laying hens, and when I have to deal with an old bird, I make stock, using my pressure cooker. I don't bother with the meat--I just pressure cook in water, with onion, celery and carrots, until the very bones are soft. I use the meat/veg mix as dog food. The stock is wonderful. Did you get the feet, too?