Melt the dark chocolate bar with butter in a mixing bowl. This can be done by placing the ingredients in microwave bowl in microwave for 2 minutes.
Add milkmaid to the melted chocolate. Mix gently.
Crush almonds, cashews and biscuits, oats in a mixer. Add it to the mixing bowl slowly. Mix it by cut and fold method.
Now add dahi, baking powder and soda and beat it well.
Add wheat flour then slowly add milk and mix well until a pouring mixture of cake is formed.
Grease an aluminium bowl with ghee and dust it with wheat flour. Tap twice on the bowl placing it inverted to let the extra flour fall off.
Now add Raisins, Blueberries and dairy milk pieces while transferring the mixture to the aluminium bowl.
Place it in a pressure cooker on a stand. Remove the whistle but cover the lid of the cooker.
Cook it for about 30 minutes. To check if it is cooked perfectly take the help of a knife and pierce it through the cake. Serve it by decorating it with whipped cream,some candies and crushed chocolate. Serve hot.