1 kg (2.2 lb) Fish fillets, firm, white, deboned, cubed
2 tsp (4 g) Turmeric (haldi) powder
Salt to taste
1/4 cup (50 ml) 1 3/4 fl oz Vegetable oil
2 Onions, medium-sized, sliced
1 tsp (2 g) Red chilli powder
1 tsp (3 g) Sugar
2 tsp (4 g) Garam masala
1 tbsp (4 1/2 g) Coriander (dhaniya) powder
500 g (1.1 lb) Tomatoes, blanched, deseeded, chopped
2 tbsp (30 ml) 1 fl oz Sour cream
1 tbsp (15 ml) Lemon (nimbu) juice
4 Green chillies, slit in half, deseeded