Take a blender and add wheat flour and rice flour.
Then add egg, sugar, cardamom and add some salt to balance the taste. Now pour some more water, Don't pour lots of water. Blend it well.
Batter is ready now. When you prepare banana fritters batter with maida or wheat flour, make it thick. We should not prepare a loose batter. Here we have prepared a thick batter.
Dip the banana pieces in the batter and slide it carefully into the hot boiling oil.