Cut bananas in half and then make a few length-way slits from the cut side towards the end of the banana but do not cut all the way through, then you can fan out the banana for a more traditional shape (see pictures)
Mix all batter ingredients in a bowl until you have a thick batter. Heat a few inches of oil in a saucepan until hot (180ºC or until a wooden chopstick 'fizzes' when dipped). Take one piece of banana and dip into the batter to coat and immediately transfer to the oil. Fry 1-2 pieces at a time for 4-5 minutes until it turns golden brown. Serve with extra powdered sugar.