Soak the lentil in a large bowl of water overnight.
The next day, put the coriander seeds in a mortar and coarsely pound with a pestle.
Set aside.
Drain the lentils.
Then transfer them to a blender or food processor, to make a fine paste.
Put the paste in a large bowl.
Add the peppercorns, chillies, coriander seeds, and chopped coriander and beat through thoroughly until light and fluffy.
Heat enough oil or ghee for deep-frying in a kadai or deep, heavy-based pan to 180 degree C / 350 degree F, or until a cube of bread browns in 30 seconds.
Working in batches, drop large tablespoons of the paste carefully into the hot oil.
Deep-fry, turning frequently for about 5 minutes, or until light golden colour.
Remove the fritters with a slotted spoon and drain on kitchen paper (paper towels).
Allow to cool.
Set the oil or ghee aside.
When ready to serve, cut each fritter into slices.
Reheat the oil or ghee in the kadhai or pan to 180 degree C / 350 degree F, or until a cube of bread browns in 30 seconds.
And re-fry the slices for about 2 minutes, or until crisp.
Sprinkle the garam masala and chaat masala over, season with salt and serve with chutney.