Take all the three dal (chana dal, moong dal, masoor dal) in a bowl. Mix them.
Wash them twice in the water and then soak them in water for 4-5 hours.
Drain the water and put the soaked dal into mixer jar with chopped green chili and chopped ginger. Grind the dal coarsely with 2 tbsp of water.
Add asafoetida, salt, and turmeric powder.
Mix well and keep the batter aside.
Divide the batter into three parts into bowls. Grease the plates or cake tin/ pan with oil. Pour the water into the steamer or a big pot. Put the stand . Cover with lid and let the water come to boil. Just before steaming take one part of the batter and add 1/2 tsp of Eno on it. Add 2 tsp of water over it and mix gently.
Immediately pour the batter into the greased plate /tin/pan. Move the dish clockwise to spread the batter. Sprinkle 1/2 tsp of black pepper powder over it.
Put the dish on the stand into the steamer. Cover with the lid and let it cook on high heat for 10 minutes.
After 10 minutes the batter is cooked. Remove the plate. Apply 1/4 tsp oil over it. Let it cool.
Cut into diamond pieces.
The dhokla is ready. See how beautiful net is formed and it looks so spongy. Similarly, make dhokla with the other two potions of the batter.
Serve Chana, Moong, Masoor Dal Dhokla/Mixed Lentils Steamed Cake dhokla with green chutney and ketchup.