Doi shorshe ilish (Hilsa with yogurt mustard paste)

Marinate fish with little salt and curd for 10 minutes.Pour mustard oil in a deep bottomed wok and arrange the marinated fish alongwith the curd.Make a paste of black mustard seeds with 2 green chillies and little salt.Add half cup coconut paste, salt,pinch of sugar, turmeric,red chilli powder, and mustard oil.Pour over fish and add little water. Cook on low flame till done.

Sprinkle 1 tbsp mustard oil and garnish with green chillies.Serve with steaming rice.