For the broth:
300g Smooth potatoes (e.gDesiree), peeled and cubed
1 x 400g can coconut milk
200ml hot vegetable stock
1 tablespoon soy sauce
300g cod fillet,cut into 3cm pieces
250g salmon fillet, cut into 3cm pieces
16 peeled raw king prawns
200g sugar snap peas, halved
2 pak choi, chopped
1 tablespoon fresh coriander
1 teaspoon cornflour
For the curry paste:
3 large shallots, peeled
1 teaspoon ground turmeric
2 red chillies, deseeded
2 lemon grass stalks, chopped
2 garlic cloves, peeled
1 x 2cm piece of fresh ginger, peeled
2 tablespoons groundnut oil
3 tablespoons water