Ingredients:
10 - 12 Boneless fish 
8-9 Curry leaves 
6- 10 cloves of Garlic, finely chopped 
1 tsp. of Ginger paste 
5 thinly sliced Green chilies 
2/3 cup grated Onions 
3 pureed Tomatoes 
1 tsp. Mustard seeds 
1/2 tsp. each of red chili powder, garam masala & Coriander powder 
1/2 tsp. Turmeric powder 
2 cups of Coconut milk 
1 tbsp. Vinegar 
A handful of Coriander leaves 
2 tbsp. Oil 
Salt according to taste 

Method:
1.Heat oil in a pan and season with mustard seeds over medium heat until they begin to splutter.
2. Add garlic and ginger and stir for a minute. Add green chilies & onions and sauté until brown. Add turmeric powder, curry leaves and tomatoes. Fry for 2-3 minutes.
3.Add the coconut milk. Bring to a boil.
4. Add fish, salt and vinegar. Cover and simmer for a few minutes till the fish is tender. Stir only once or twice and very gently to make sure that the fillets do not break.
5.Taste and adjust the seasoning. Garnish with coriander leaves and serve hot.