Clean banana flowers, chop roughly and put them in buttermilk.
Grind together channa dal, salt, turmeric powder, garlic, red chillies, cumin seeds and fennel seeds. Grind them coarsely and take in a bowl.
Again roughly grind the banana flowers and add to it. Mix well and Check salt.
Add chopped onions, curry leaves and coriander leaves.mix well.
Heat oil, make small balls of lemon size with the batter. Flatten it slowly with your fingers. Fry until golden brown on both sides. Transfer it to tissue paper.Serve hot with sauce or coconut chutney.