Take mixer jar and add biscuits o it.now crush in mixer grinder untill it turns in fine powder.
Now take out it in a bowl.and add cocoa powder and coffee Powder and mix well.
Mix.then add condensed milk slowly by mixing and knead a dough.
Now make equall sized balls from it and decoarte with melted chocolate.
Now keep in refrigerator to cool and set.
Serve these chocolate balls.