- In a pan, heat coconut oil and temper mustard seeds, cumin seeds, dried red chillies, fenugreek seeds – let them splutter. Add curry leaves along with finely chopped ginger, garlic, slit green chillies and fry for a minute. Next add finely chopped shallots and fry until translucent. Add turmeric powder and cook for a minute. Switch off the heat. Now add whisked in buttermilk and mix well – make sure the buttermilk is not curdled. Add salt and heat it up on low flame for 3-4 mins only. Remove from heat. Serve with hot rice!