Place the plastic brewer and the cotton paper filter on the glass carafe and put medium ground coffee into the filter. The paper filter gives the coffee a round clear taste. You can see the dripping process in the glass carafe and know the amount of the dripped coffee when it reaches the white dot on the server. The holder can also be used as a measuring cup for coffee beans as it has a scale marked on the surface. All the parts are stackable to save space.