Make a batter of gram flour by mixing it with water. Sieve the flour in a bowl and pour 150 gms water in it. Whisk the batter nicely so that all the lumps are dissolved. Now add salt, red chili powder, coriander powder and coriander leaves into the batter and mix well. Leave the batter for 15 minutes. Meanwhile peel the potatoes and cut them into fat round slices.
Heat oil in a pan. Once the oil is heated to a desired temperature take one potato slice and dip it into the flour batter. Put this slice into the pan to fry. Make 4-5 pakoras in the same way and fry them until they turn deep brown in colour. Now take them out on a plate and prepare more pakoras from the mixture.
Aloo Pakoras are ready. Serve them with tomato ketchup and coriander chutney.