There is only one solution. Very slow, long cooking time.
The recipe couldn't be easier. Put cockerel pieces (works for an old hen too) in a pot with a litre of cider a couple of chopped apples, an onion , some carrots and a few garden herbs.
Bring to boil, reduce heat and simmer slowly for at least four hours. At the end of this time, remove the chicken and push the stock through a sieve. Thicken the stock with a little cornflour if you wish, replace the meat and season to taste. Yum!