Wash and soak both the daals for 4 - 5 hours.
Grind them coarsely.
Add coarsely pounded spices.
Add ginger chilly paste.
Add salt.
Heat oil for deep frying.
Now till the time the oil is heating, beat the batter very well.
Finally add asafoetida and cooking soda and mix again.
Take a big lump of batter and drop it into the oil.
Similarly make more big pakoras and drop them into the oil.
Simmer the flame and let cooking the vadas.
Remove with a slotted spoon, once they have cooked.
Let cool.
Now using a sharp knife slice the pakoras.
Refry these slices till golden and crisp.
Serve them as it is or as a dahi papadi chat.