1Heat a generous glug of olive oil in a large pan and soften the shallots, then add the garlic, ginger and spices. Fry until fragrant.
2Add the fresh tomatoes and cook until softened and caramelised.
3Stir in the sweet potatoes, tinned tomatoes, coconut cream, fish sauce, mango chutney, lime pickle and lime zest and juice. Simmer until the potatoes are nearly tender.
4Taste and add more lime pickle, mango chutney or a splash of soy sauce for depth if needed.
5Add the salmon and cod and simmer gently, then add the prawns and cook until the fish is cooked through and the prawns are pink. Stir through the spinach.
6Mix the Greek yoghurt, 1 tbsp of mango chutney and 1 tbsp of lime pickle together to make the zingy yoghurt.
7Serve with a generous dollop of zingy yoghurt, fresh coriander, nigella seeds and warm naan.