Combine soaked yellow moong dal, green chilies, salt, sugar, oil, turmeric powder, besan, curd and blend in a mixer using a little water (2 tbsp) to make a smooth paste.
Keep 2 cups of water in a deep kadhai 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.