Put the carcass in a large pan with the following:
The washed peel and skin from an onion (or half an onion)
A washed carrot (no need to peel)
A stick celery
salt
parsley
A Bay leaf
2 - 3 whole cloves
a teaspoon black peppercorns
Cover with cold water
Bring to the boil and remove scum from top with a slotted spoon.
Simmer for at least 1 hour- preferably 2 hours.
Strain into a bowl and use in soups, gravies, risotto, or as required. Freeze left over stock.
Will keep for 2 - 3 days in the fridge. It will jellify when cold - this is normal, it will turn back to liquid when heated.
Easy store-cupboard vegetable soup from chicken stock:
Peel and finely chop:
1 Onion
1 -2 Carrots
2 potatoes
any other vegetables to hand such as celery, sweet potato, swede, turnip, parsnip, tomato, leeks.
Heat a little oil over a medium heat. Sweat vegetables till soft and add chicken stock. Simmer till carrots are soft and adjust seasoning. Add chopped parsley and serve.
This soup can be liquidised. If extra potatoes are added, it makes a meal in itself. Any left over chicken meat can be shredded and warmed through in the soup just before serving. (Do not boil the cold chicken meat as it will toughen it)
Also you can add: Pasta, Any Beans such as cannelloni or borlotti, peas, etc.