2 teaspoons oil
1/2 lb (225 g) onions, finely sliced
Pinch of sea salt
2 sticks celery, sliced
2 - 3 tomatoes (optional)
1 clove garlic, sliced
A generous pinch each of fresh or dried basil, oregano and green anise
2 bay leaves
2 teaspoons ground coriander
1 pint (570 ml) water or kombu stock
1 lb (455 g) whiting or haddock
4 oz (110 g) shrimps or prawns
2 oz (55g) hard white cheese, cottage cheese or tofu