Method:

1. In a bowl mix gram flour, citric acid, salt, sugar and turmeric. Add water and make it into a smooth batter with medium thick consistency.
2. In a glass add the fruit salt or baking powder. Add water to it and pour this into the dhokla mixture.
3. Grease the steaming tin with 2 drops of oil and pour the mixture into it. Steam for about 15-20 minutes or till cooked.
4. In a pan, add oil, mustard seeds, curry leaves and red chillies. Let it splutter.
5. Pour the tadka over the prepared dhokla.
6. Cut into pieces and serve.