This is another one of the Bihar staple tea time snack called 'kachri'.
Black gram- soaked overnight (at least 5-6 hours), ground into paste
Onion -1 medium , finely chopped
Ginger -1" finely chopped
Green chillies - per taste finely chopped
Salt -per taste
Coriander leaves - chopped up
Oil to fry
Mix everything and form into small patty like shapes. Shallow fry on a non stick tawa ( in pre calorie counting days, it would be deep fry ), crispy and crunchy and perfect for tea time .