In a bowl add potatoes and salt.mash them nice and keep aside.now heat oil in kadhai.In a other bowl add gram flour and all other spices.add needed water to make batter.take bread slice,fill it with potato filling and cover with other bread slice.now dip it into the gram flour batter and deep fry them till golden brown and crispy.take out from oil and cut into four pieces and serve hot with tomato sauce.