450 g (1 lb) fish bones, skin and heads
1700 ml (3 pints) water
1 small onion, thinly sliced
1 small carrot, thinly sliced
1 bay leaf
6 black peppercorns
1 blade mace
1 sprig thyme
1 lemon slices
45 g (2 1/2 oz) butter or margarine
1 carrot, sliced
3 leeks, well washed and thinly sliced
1 clove garlic
Pinch saffron
80 ml - 125 ml dry white wine
225 g (8 oz) canned tomatoes
1 lobster
450 g (1 lb) cod or halibut fillets
450 g (1 lb) mussles, well scrubbed
450 g (1 lb) small clams, well scrubbed
8 new potatoes, scrubbed but not peeled
Chopped parsley
225 g (8 oz) large prawns, peeled and de-veined