Masala Fish curry-tasty and easy recipe

Ingredients

1kg fish
3 medium sized tomatoes for puree
½ bowl of chopped coriander
2 green chillies
2 large onion chopped
2 tsp coriander powder
1 tsp red chilli powder
½ tsp turmeric powder
1 tsp garam masala powder
1 tsp cumin seeds
½ fenugreek seeds
12- 15 curry leaves
½ lemon
1 tbsp Ginger garlic paste
Salt as per taste