In a bowl,mix the coffee powder,water and sugar.Keep it aside.Then,in a large mixing bowl,take the butter and crush it(do not melt it).Add the cocoa powder and sugar.Mix well with a spatula.Take the biscuits,dip them in the coffee syrup(the first syrup you had made).Cover one side of the biscuit with the butter paste and do this with all of the biscuits and stack them one above the other.Cover the whole stack with the remaining butter paste.Then,tightly pack the stack of biscuits in a cellophane paper and keep in fridge for 3-4 hours.Cake ready!!
