In a large bowl, add the dosa batter, semolina, rice flour, chopped onion, green chilli, ginger, coriander, cumin seeds and salt.
Mix well and make sure the batter is thick. If the batter is runny add more rice flour to make it thick.
In heavy bottomed vessel, heat oil for deep frying. Turn the heat to low when ready.
Dip you hand in water, this will help in the batter not sticking to you hand.
Take small lemon sized portions and gently drop them into the oil.
On medium heat, fry them until golden brown. Drain the excess oil on paper towel. Repeat the process for the entire batter.
Serve hot with coconut chutney or mango pickle.