Wash and soak the chana dal for 5-6 hours.
Drain the water from the soaked chana dal.
Add chopped green chillies and ginger to the dal and grind it to a coarse paste.
Remove the crushed coarse dal mixture into a bowl.
Add yogurt, turmeric powder and salt.
Mix well, cover and keep aside for 3-4 hours for fermenting.
After 3-4 hours mix the mixture lightly.
Add ENO and 2 tsp of water on it.
Mix it gently, do not over mix.
Pour the batter in a greased tin ( square 8" x 8") or round deep dish.
Place the tin in the steamer, cover and steam for 20 minutes.
Remove from the steamer and let it stand for 5 minutes.
With the help of the knife lose the edges.
Cut into square pieces and demould the Khaman.