For the cake - Preheat oven to 180 degrees. Grease an 8 inch pan well and flour it.
Seive the dry ingredients together. Whisk the butter and yogurt till well incorporated. Add the flour mixture, milk and condensed milk in alternative additions and whisk till all is mixed without any lumps.
Pour the cake into the prepared pan and bake for 20 minutes till done. Cool the cake completely.
For the mascarpone cheese - Place a large pan with water upto one inch on the stove top and bring it to boil.
Empty the contents of the whipping cream into a small saucepan.
Once the water boils, reduce the heat to the minimum and place the small saucepan on top of the water. Allow the cream to heat, stirring in between.
It took around 15 minutes for the cream to become warm.
When you see it becoming warm, add the lemon juice and continuously stir. The thing with mascarpone cheese was that it would not curdle too much, all it did was become thick and coat the back of the wooden spoon thickly.
Meanwhile, arrange a deep pan with four cheese clothes in it.
Pour the done mixture onto the cheese cloth. Allow it to cool completely.
Cover it up with cling film, close the lid and leave it in your refrigerator overnight or 24 hours. I left it in the fridge for around 12 hours. Made around a cup.
For the frosting - Add the coffee powder to the warm water. Keep aside.
Beat the whipped cream in a cold pan till it develops stiff peaks.
Add the icing sugar and beat again.
Finally add the prepared mascarpone cheese, 4 tbsp of the coffee concoction and the vanilla essence and mix well to incorporate.
Cut the cake midway into two pieces.
Brush generously with half the coffee mixture on one piece of the cake till well soaked.
Add the frosting and spread across it.
Place the other half of the cake on the top and brush the remaining coffee onto it till well soaked.
Spread the frosting on all sides of the cake till well covered.
Refrigerate the cake overnight for the flavors to set.
Decorate with the chocolate drops and dust the cocoa powder on top. Serve cold!!!