Wash and soak urad dal and moong dal in enough water for 6-8 hours. Drain nicely.
Add soaked dal, ginger, green chilli, baking soda, water, salt and hing in the jar of a blender.
Blend together to make a smooth paste
Take out the paste in a bowl and whisk it with a spoon or your hand till it is light and fluffy. It will take 5-6 minutes.
Cut the corners of the bread slices.Keep a bread slice on your palm and slightly wet it with water from both the sides.
Mix the ingredients of the filling in a bowl.
Keep a small amount of filling in the centre and bring back the ends and make a round.
Slightly press the round. Repeat the process with all the bread slices.
Heat oil in a pan. Dip the bread vadas in the dal batter. Slightly wet your palms and take out the vada on your palm.
Shape it with your fingers and drop it in hot oil. Simmer the heat. Fry all the vadas till golden brown on medium heat. Remove the vadas on a plate lined with kitchen towel.
Once all the vadas are fried and you are ready to serve, just soak them for 5 minutes.
Gently press vada between your palms. Arrange them on a serving plate.
Whisk curd with black salt and sugar. Pour the curd over the vadas. Add tamarind chutney, sprinkle roasted cumin powder, red chilli powder and garnish with coriander and pomegranate. Serve immediately