Wash poha. Soak in water for 5 to 10 mins till soft. Drain.
Chop onions and green chillies. Finely chop ginger.
In a mixing bowl put poha and remaining ingredients (except oil) and mix and mash well. If too wet can add more besan or rice flour. If too dry sprinkle a little water. Mix and make a soft dough.
Heat oil to deep fry. Shape the dough into lemon size balls and flatten a bit. Deep fry in hot oil till golden brown and crisp.
Note
Can add 1-2 tsp curd when mixing the dough. Can substitute mint leaves with coriander leaves.