Soak 250 gm of green gram for 2 hours. Then drain the water and blend the lentil with 1 cup water. Add in 250 gm sliced onion. Then add in 6 green chilies, 2 tsp cumin seeds, 2 tsp coriander seeds, 1 tsp salt and 1 tsp crushed black pepper. Mix everything together. Heat some oil and put the batter with the help of hand in the pan. Fry it and serve.