In a mixing bowl , take besan /gram flour , salt , sugar , hing , 2 tablespoon fine sooji ,pinch of turmeric powder, ginger green chilli paste . Add 2 tablespoon of yoghurt or add 1 teaspoon of lemon juice.
Now add ¾ cup - 1 cup water , add water part by part and beat.
Beat the batter well , batter should be thick but of spoon dropping consistency.
Now keep the steamer ready , add water to steamer and let it come to boil . Whilst grease the steamer pan / dhokla plates / idli plates or moulds and keep it ready.
Add 2 teaspoon of eno fruit salt to the batter and quickly mix well everything evenly. If there is no eno salt use ½ teaspoon of baking salt.
Now pour in the batter to prepared greased plates/tin , arrange them and steam it . If using a entire batter in a single tin ,then steam for 18-20 minutes . If using dhokla plates , then steam for 10-12 minutes.
Once steamed , give 5 minutes standing time and then remove .
Loosen the corners with a knife and invert it on a plate. Cut into squares.
In a bowl take sugar and ⅓ cup of water, let sugar dissolve. For this add 1 teaspoon lemon juice and set it aside.
Meanwhile prepare the tempering, Heat 2 tablespoon of oil in a tempering pan, add mustard seeds once it crackles , add jeera , sesame seeds , chopped chillies and curry leaves.
Now pour the tempering over the precut khaman dhokla. Allow it to soak the sugar syrup .
Add in prepared sugar syrup carefully and bring it to boil.
Garnish with coriander leaves, grated fresh coconut (optional) and serve it with coriander mint chutney.