1 cup rice
1 cup urad dal
1 cup yellow moong dal
3 cups sour buttermilk
2 green chillies crushed fine
1/4 tsp - ginger grated fine
1/2 tsp - soda bicarb
2 tbsp - oil
2-3 pinches red chilli powder
1/2 tbsp - coriander finely chopped
Salt To Taste

Preparation:

Mix the rice and dal, wash, drain and dry on a clean cloth for a few hours.
The grain should be completely. Grind to a coarse flour in dry grinder or at the flour mill. This flour should be like very fine soji in texture.
Store in airtight container and use as required. Will keep good upto 2 months. To make khaman, take 1 cup flour in a bowl.
Add buttermilk, and mix well. Keep- aside for 4-5 hours. Dissolve sodabicarb in the oil. Add to batter.
Mix all ingredients except red chilli powder and coriander. Pour immediately in a 6" diam. greased plate.
Steam over water either in a cooker or steamer. Pierce knife, and check, should come out clean if done.
Sprinkle the chilli powder and coriander, steam again for 2-3 minutes.
Cut dhaman dhokla into squares or diamonds and serve hot with coconut chutney.