Take a pan and heat the oil. Take a bowl and mash the potatoes and mix the onion and green chilli. Mix all the spices and mix it well. Cut the bread slices and put the ingredients into it. Take another bowl and put the gram flour.put salt and soda powder and ajwain. Put the water and mix it well. The bread slices dipped in the gram flour and deep fry in the oil and serve with tomato ketchup.