Chocolate Sponge Cake in Cooker

It was my sister's wedding anniversary and I had planned to meet her on that day. I wanted to gift her something special.
Thinking and thinking..,finally i decided to make a chocolate sponge cake for her.
I made this cake in cooker and it came out really well.

INGREDIENTS

All purpose flour(Maida)  -  1 cup
Sugar  -  1 cup
Egg  -  2
Cooking oil  -  1/4 cup
Cocoa powder  -  2 tbsp
Vanilla essence  -  1 tsp
Salt  -  1 pinch

METHOD

Break both the eggs in a bowl and beat them well until fluffy.
Then add vanilla essence and mix well.
Add the vegetable oil and mix it once again.
Then slowly add the all purpose flour and mix well.
Then add baking powder and sugar and beat until a smooth mixture is formed.
Then finally add cocoa powder and salt and mix well once again.
Grease the cake tin with cooking oil on all sides
Now dust the inside of cake tin with 1/2 tsp all purpose flour.
Pour the cake mixture into the cake tin.
Now place the cooker onto the stove and cover the surface of the cooker with salt.(This is to avoid cooker from getting damaged).
Then place a idli stand inside the cooker and place the cake tin above it.
Cover the cooker with its lid and cook on high flame for 2 minutes. (Do not put whistle).
After 2 minutes, lower the flame and cook for 25 minutes.
After it is cooked open and check whether the cake is baked completely or not. (Poke the tooth pick in the middle of the cake and if it comes out clean that means cake is ready.Otherwise bake it again for 5 minutes on low flame).
After the cake is cooked, switch off the flame and keep it covered for 10 minutes and allow it to cool down.
Take out the tin from the cooker and use a knife to separate the cake from the tin and place it on a plate.
Cut it into pieces and serve with tea.