Combine the bournvita and fresh cream in a deep bowl and mix well.if chocolate cream mixture drops from the spoon instantly,then refrigerate it for 10 min.

Combine 3/4 cup of water,sugar,coffee, milk powder,and butter in a nonstick pan,mix well and bring to boil and cook on a medium flame for 2 min.while stirring continuosly.

Reduce the flame and cook on a slow flame for 2 min.keep aside to cool slightly.

Place the buiscuit in a deep bowl pour the warm chocolate mixture gradually over it and mix well using a spatula till the chocolate mixture in it and spread it evenly using a spatula.

Place a cake tin mould.pour the buiscuit chocolate mixture in it and spread it evenly using a spatula.

Pour the chocolate cream mixture over it and spread it evenly using the spatula and cover the cake with the whipped cream.

Loosen the sides of the tin with a knife and demould the cake.

Refrigerate for atleast 2 hour.

Buiscuit cake is ready.