Coconut milk curry/South Indian Dish

Coconut milk curry, also well known as Tomato Sodhi in South India.
It is a warm and comforting curry with chunky tomatoes that goes well with rice and dosa /appam( rice pancake)

Ingredients
As required Oil
1 tsp Mustard seeds
½ tsp Fenugreek seeds
2 stick Curry leaves
1 Onion sliced
2 Green chili
1 Red chili
1 tbsp Ginger garlic paste
2 medium Tomato
1 tsp Turmeric powder
½ tsp Chili powder
½ tsp Coriander powder
1 liter Coconut milk
Salt to taste