Spicy Cioppino

1 onion, chopped

4 stalks celery with leaves, chopped

4 carrots, sliced

4 potatoes, peeled and cubed

3 cloves garlic, minced

handful chopped fresh flat leaf parsley

handful chopped fresh coriander

1 (700g) jar passata

450ml (16 fl oz) tomato juice

1 bottle white wine

1 dessertspoon dried basil

1 1/2 teaspoons dried oregano

1 tablespoon dried thyme

3/4 teaspoon chilli powder

1/8 teaspoon cayenne pepper

salt and freshly ground black pepper to taste

500g (1 1/4 lb) halibut steaks, cubed

500g (1 1/4 lb) fresh prawns, peeled and deveined

500g (1 1/4 lb) mussels, cleaned and debearded

150g (5 oz) clams in shell, scrubbed

500g (1 1/4 lb) cooked crab meat

500g (1 1/4 lb) sea scallops, rinsed