All you need are chicken bones - ideally with a little meat still on them - and some basic vegetables. We like to take the opportunity to use up gnarled carrots and wilted celery tops too. The end result is invariably delicious and nourishing. Soup made with homemade chicken broth is always just a little extra special! Steps and pics below... This does take a while, but it's mostly hands off.
1. Pull apart whatever is left of the chicken carcass. It's good to split small bones apart; this helps the stock jell. Cut up one or two onions, a few stalks of celery, and a couple carrots and pile into a large pot with the chicken pieces. Add a bay leaf, a handful of parsley, a few peppercorns and any other wilting greens you have around - leeks and turnips are good too.
2. Fill the pot with water and put over high heat.
3. Bring to a rolling boil then lower the heat. You don't want this to boil briskly; the water should just gurgle, with a few bubbles occasionally hitting the surface.
4. If a foamy muck comes to the top, skim it off. This is just fat rising to the surface. Don't worry if you can't get all of it. Let simmer for about four hours - or however long you have. Two hours will produce a reasonably good chicken stock, although it is not ideal.
When you are done, remove from the heat and strain out the bones and vegetables, pressing on them to make sure extract all the liquid. Put in the fridge overnight to cool. The next day, skim any congealed fat off the top and discard or save for cooking. Put the stock in quart containers or bags to freeze. This will stay good in the freezer for several months, and good in the fridge for a few days.