Drain all water from boiled arbi and potatoes. In a mixing bowl mashed potato and arbi nicely so that no lumps remained.
Heat 4 tablespoon of oil in a frying pan . Add dry red chili,cumin seeds,hing powder and fennel powder. Stir for 1 minute then add mashed arbi and potatoes. Keep stirring for 5 minutes then add ginger paste,red chili powder, turmeric powder and salt. Keep stirring until the mixture transform like a dough and come together about 10 minutes.
Switch off the flame , add kasoori methi and give a stir. Transfer it to a flat plate to cool quickly.
In a bowl add besan and with water make batter not very runny or not very thick. Add a pinch of salt and red chili powder.
After the mixture cool down make small balls out of it. Now transform those balls to small disc by pressing in hand.
Heat sufficient oil in frying pan. Dip arbi mixture disc in besan batter,coat very nicely then drop in hot oil. Fry them light brown in medium flame.
Drain them in paper towels to soak excess oil. Arbi fritters is ready . A scrumptious snack which goes very nice with coffee or tea or as a starter.