Wash and peel the outer skin, core the centre and chop the chow chow into small cubes and keep aside.
Wash and soak the moong dal in a bowl of water for 10 minutes.
Boil the chow chow in a pan with just enough water.
Microwave the moong dal for 5 mins.
Heat oil in a nonstick pan, add the mustard seeds, and let it splutter.
Add the hing, dried red chili, curry leaves and let it crackle.
Add in the chayote cubes and saute for a minute.
Next, add the boiled moong along with salt and combine everything well.
Cover with lid and simmer for 5 mins.
Open and add in the grated coconut and mix well.
Serve as a side dish along with sambar and rice.