A cartridge receptacle for producing a beverage by means of a cartridge whichcomprises a reservoir filled with a beverage substance. The cartridgereceptacle isinsertable into a beverage preparation machine and is connectable to acartridge.The cartridge receptacle has a mixing chamber that is fluidically connectableto thereservoir and a fluid feed that leads into the mixing chamber. The mixingchamberhas mixing structures in the region of the outlet of the fluid feed into themixingchamber.