- Trim off the edges of bread slices, break and transfer them into a bowl. Add black salt, chilli powder, cumin powder, salt, ½ cup buttermilk and mash well. Divide the prepared mixture into equal portions, shape into balls and lightly flatten. These are vadas. Pour some buttermilk in individual serving platter and place the prepared vadas. Combine yogurt and sugar in another bowl and whisk well till sugar melts. Pour some yogurt mixture on top of vadas. Put some green chutney and sweet chutney on top of it. Sprinkle some chilli powder and black salt on top and Serve immediately.