Take a bowl, add ripe banana, mash it. Now add, sugar ,oil /butter and yogurt. Whisk everything till smooth.
Then add all purpose flour or Maida,baking powder , baking soda (pass through the sieve) into the wet batter..mix well..add milk little by little to make semi thick batter.
Now add chopped almond and cardamom powder..mix well everything
Heat a pressure cooker for 2-3 minutes on medium-high flame. Put an aluminium rack inside it.
Grease a cake tin with 1 tsp oil and dust it with flour. Pour cake batter, keep the cake tin inside the cooker carefully. Cover it with lid without locking it, reduce the flame on low fire.
Wait for 40-45 minutes. If you see brown crust on the cake, put a toothpick or knife inside the cake. If it does not stick means the cake is done. If it sticks, wait for a few minutes.
Turn off the gas, do not touch cake until it cools down a little
If you want to make this cake in oven ,Then preheat oven on 180c for 10 minutes. Then put the cake battar filled tin into the oven and bake it on 180c for 40 - 45 minutes or till a toothpick or knife comes out clean.