the method including the following steps insertion of a pre filled cartridge with a powder supply having a plurality of preferably compressed powder portions of ground coffee beans into a cartridge receptacle of a preparation device automatic or at least partially manual metering of a powder portion from the powder supply wherein the entire powder supply is moved for this purpose preferably displaced axially with the assistance of metering unit and then the powder portion is separated from the powder supply transfer of the powder portion to a brewing unit of a preparation device automatic preparation of the coffee in the brewing unit using the powder portion and a heated potable fluid flowing through the powder portion in the brewing unit more particularly under pressure closure of the cartridge in the cartridge outlet opening area of the preparation device application_number US 201214343097 A description a first method alternative which can be carried out by using a coffee preparation device will be explained below by means of fig1 a to 1 i for the sake of clarity the illustration of a heating device which is known per se for heating the liquid in particular water which is to be conveyed into a preparation mechanism of the preparation device which comprises a brewing chamber was forgone as follows from fig1 the preparation device 1 which is used comprises a cartridge accommodation 2 for accommodating a cartridge 3 which is embodied herein as disposable cartridge and which is prefilled with a compressed ground coffee bean powder supply 4 which is dimensioned such that a plurality of powder.