Fish Stock

Use the trimmings, bones, heads of any white fish.  Don't overcook or it will become bitter.

1 Kg bones and trimmings
1 onion, quartered
1 carrot, sliced
1 stick of celery or 1 leek, sliced
3 stalks of parsley
1 bay leaf
2 sprigs of thyme
6 peppercorns
1 glass of white wine or 1 tbsp of white wine vinegar

Put all ingredients in a pan and bring to the boil. Simmer for 20 minutes.  Strain into storage container (maybe use something disposable or a freezer bag as plastic will hold the smell).