1 red chilli, trimmed, seeds removed
12 fresh curry leaves (available from some supermarkets and Asian grocers)
陆 tsp methi powder (ground fenugreek)
4 tbsp chopped fresh coriander leaves
2 garlic cloves
4cm/1陆in piece fresh ginger, peeled
1 lime, juice only
1 lime, cut into wedges
1 onion, peeled and roughly chopped
200ml/7fl oz coconut milk
2 tbsp unsweetened condensed milk
500g/1lb 2oz plain white flour, plus extra for dusting
pinch asafoetida
1 tsp black mustard seeds
1 tsp salt
1 tsp sugar
2 tbsp sunflower oil
陆 tsp ground turmeric
110g/4oz butter, melted
2 free-range eggs, beaten
150ml/5fl oz full-fat milk
500g/1lb 2oz jumbo tiger prawns, heads removed, de-veined, tail intact, butterflied