Grease a 9 inch cake pan with oil. Put a pan with water for steaming to boil.
To the ground Moong, add all the remaining ingredients for Dhokla, except Eno.
When water in the pan is boiling and ready, mix Eno to the Moong and IMMEDIATELY put in pan to steam for 15 minutes
Take out of steaming pan and let it cool completely.
Now prepare Tarka/Vaghar
Heat Oil. Add 11/2 tsp Mustard seeds and Sesame seeds, let them splutter.
Add chopped Green chilies and Curry Leaves.
Stir and add Sugar, Salt and Water.
Cut Dhokla and pour Tarka on top.
Garnish with grated Coconut and chopped Cilantro.
Notes
200 ml water may seem like a lot, it will all get absorbed by Dhokla. When you first pour Tarka with water, it seems watery but don't put less, its all taken in by the Dhokla.