Heat a pan and add moong dal.
Dry roast the moong dal till it loses its raw smell and turns aromatic.
Allow it to cool and transfer to a bowl. Add water and rinse the dal.
Transfer washed moong dal to a pressure cooker.
Add turmeric, salt and 2 ½ to 3 cups of water.
Cook for 3 to 4 whistles.
Open the pressure cooker when the steam releases completely.
In the meanwhile prepare a coconut masala by blending coconut, cumin seeds, green chillies,garlic and onion.
Transfer the cooked dal to a pan/pot. I have used a clay pot to cook the dal.
Add water as required to adjust the consistency of the dal.
Add the coconut masala and mix well.
Cook the dal on low heat till it comes to a boil.
Check the seasoning. Add salt if required.
For the tempering, heat a small pan.
Add coconut oil.
Add mustard seeds, dry red chilly, chopped onionand curry leaves.
When all the ingredients start sizzling, pour into the Parippu curry.
Give a quick mix.
Serve Parippu curry with steamed rice.