Method of Preparation :
Steam and smash the bananas, removing the seeds and fibres. It should be one cup. Sieve the refined flour and baking powder together.
Soften the butter and beat with the powdered sugar. Add the egg yolk to it one by one and beat again. Add the grated orange skin to it and mix the contents well.
Add milk little by little to the refined flour and make a dough. Add the smashed bananas and the prepared butter-egg mixture to it.
Beat the egg white till light and fluffy and add the vanilla essence, cardamom powder and sugar in it. Mix it well with the cake batter.
Pour the contents to a greased and floured vessel and bake in a preheated oven which is set at 400oC.