Grate the paneer in a bowl.Boil and peel the potatoes first. Then grate them finely as well.In a big mixing bowl add grated paneer, grated potatoes, cornflour, salt, ginger and some green chilies. Mix everything well.
Now pinch small size balls from the mixture and roll giving it a round shape. Flatten a little in oval shape. Continue doing the same until the entire mixture is utilized.Then deep or shallow fry the vadas in hot oil. Place 3-4 vadas at a time until golden brown and crispy from all sides.
Drain out the vadas on kitchen paper towels to remove excess oil and similarly fry all the vadas.
Vadas are ready to serve.To serve, take 3 to 4 vadas in a plate and pour some whisked curd over it. Then sprinkle some black salt, roasted cumin and red chilly powder over the vadas.Now top them up with some sweet chutney and green chutney. Pour some curd again and sprinkle some black salt, roasted cumin powder and red chilly powder. Yummy paneer dahi vada is ready, serve immediately.