First we have to prepare coffee solution....mix coffee powder and sugar, keep aside.
Mix coco powder, powdered sugar, melted butter and milk, mix it well.
Now take a plate, take one biscuit dip it in coffee solution and keep in plate.
Spread coco paste on it.
Then again dip another biscuit in coffee solution and put it on coco paste.
Repeat the procedure till 7 biscuits.
Then cover this tower with coco paste.
Decorate as you wish.
Keep in refrigerator for 1 hour atleast.
