Heat coconut oil and sauté the urad dal for 1 minute.
Add garlic, small onions, dried red chillies, and green chillies. Sauté until the onions turn soft.
Furthermore, add coriander leaves, murungai keerai, tamarind, and turmeric powder. Sauté for 2 minutes.
Add coconut and turn off the heat, and let it cool completely.
Add salt and a little water. Grind to a smooth or slightly coarse thogayal