Wash and soak the whole moong daal for overnight.
Grind the soaked whole moong daal with ginger, green chilli, coriander leaves, besan or gram flour, curd and very little water (2 tbsp) to a semi coarse paste.
Keep 2 cups of water in deep kadai and put a stand in it. Cover it and let it boil for 5 minutes. Now add Eno in a dhokla batter and pour 1 tsp of lemon juice over it. Mix it well.