Wash both the dals very well and soak both together for 6 hours or overnight in water.
Wash and soak the poha in water for 10 minutes at the grinding time.
Once you are done with a soaking of dals and poha, drain all the water from dal and poha.
Take everything into a blender.
Blend them into a smooth but little bit coarse paste using 1 and ¼ cup of water.
Now take this batter into a bowl. Cover it and keep this batter to ferment in a warm place for about 6 to 8 hours.
Once the batter is fermented, add ginger chili paste, oil, salt, and turmeric powder. Mix well.
Slowly add 450 ml of water in the mixture and try to make a smooth batter from it. The batter should neither be too thin nor be too thick.
Now, heat some water in a steamer. Take a steel plate (I am using a 9-inch diameter plate) and grease it with some oil.
After that add baking soda and lemon juice. Mix very well using a whisk.
Pour ⅓ rd of the prepared batter in the greased plate neatly. (Note – Batter Quantity is depended on the size of the plate/mould you are using).
Now, place the batter filled plate in the steamer carefully and let it cook for at least 10 minutes.
Surti locho appears to be puffy and cooked.
Take out the plate and with the help of a spatula, transfer the locho in a serving plate.
Lastly, drizzle it with some butter, locho masala, sev, chopped onion, and serve immediately with green chutney.