Peel banana and cut them in half. Slice them thinly. Set this aside till use.
Mix all the ingredients given for batter to a smooth paste. it should n't be too thick or thin.
Heat oil for deep frying. Dip the banana sliced in batter and fry on both sides till golden and crispy.
Drain on a paper towel.
Serve with coconut chutney
Notes:
1)Make the batter at correct consistency. If you make it too liquidy, then it wont coat the banana. if you make it too thick then there will be too much outer batter covering for the vegetable.
Don't add too much baking soda or It will drink up lots of oil.