Goan Fish Curry

Ingredients: 800g de-shelled and de-veined prawns 30-40s 1kg fresh West Coast mussels 1 bunch spring onions, chopped 4cm piece ginger, peeled and finely chopped 4 cloves of garlic, minced 1 red chilli, chopped(deseed for a milder curry) 3tbs Eat.Art Goan fish spice 1tbs ground cumin 1