Wash andsoak the dals in enough water for 4-6 hours.Drain and make a smooth paste in blender.
Whisk the batter with the help of a spoon for few minutes to lighten the batter. Add ginger, peppercorn powder ,raisins and salt and mix it thoroughly.
Heat oil in a pan or skillet. Add the batter prepared above carefully with the help of spoon to the heated oil in order to make 6-8 balls at a time.
Don't touch these balls for first 2 minutes, then slowly flip it ( keep the heat low)
Fry on low heat until it becomes golden from both sides with continuous stirring.
Take these balls out of the oil at high heat in order to avoid soaking of oil in them. Soak these balls into water immediately after removing from oil.
Repeat the same process with the remaining batter. Mix all the ingredients for masala and keep aside.
Platting: Squeeze four balls ( Bhalla) and place them in a bowl.
Pour whisked yoghurt into the bowl just to cover the Bhalla.
Add 1 tbsp of mint chutney. Add 1 tbsp of tamarind chutney.
Sprinkle a pinch of masala , sev and garnish with chopped coriander.
Notes
You may also make the vadas with one kind of lentil, preferabbly urad dal.
The toppings can vary as per your choice, like boiled potatoes, pomegranate etc.
Keep the vada soaked in watwer and squeeze just before serving.