Wash nicely and soak dal for about 3-4 hrs.
When ready to make, drain water completely from dal.
Add salt, ginger, green chillies and grind to fine paste.
Do not add much water. Add about 1-2 tbsp at a time. Also, grind dal in small batches.
Transfer batter in a bowl, add cumin seeds, finely chopped coriander(optional).
Beat batter for about 5-10 mins. till it is nice and fluffy, It will change color to light cream.
Heat oil in a kadhai on medium flame. Drop little batter to check whether it is ready for frying.
The batter should rise slowly.
Drop spoonful of batter carefully in hot oil and fry on medium-low flame.
Fry till the out part starts to change light yellow in color.
Take out fried ladoos on an absorbent kitchen towel.