Sieve flour in a bowl.add the baking powder and baking soda

Break the egg in a separate bowl and in sugar whisk.add in the milk and mix together.

Add in the cooking oil and keep mixing.slowly add in the milk mix to the flour until it forms a nice smooth batter.

Add in the vanilla essence and keep mixing.

Divide the batter in half and in one mix in the drinking chocolate

Grease a tin with oil and add in the chocolate batter first and then the plain one

Place a sufuria on a pressure cooker and place a wire inside. Allow to heat for 5 minutes on low heat.

Place the cake batter tin on the wire and cover.

Bake for 20 to 30 minutes

Allow to cool serve.