What is proposed is a cartridge system (1) for producing a beverage (70), wherein the cartridge system (1) can be inserted into a beverage preparation machine (3) and has a cartridge (2), which comprises a reservoir (6) filled with a beverage substance (7), and a cartridge receptacle (10), which is connected to the cartridge (2), wherein the cartridge receptacle (10) has a mixing chamber (8), which can be fluidically connected to the reservoir (6), and a fluid supply line (12), which opens into the mixing chamber (8), wherein, furthermore, the cartridge (2) is manufactured at least in part from aluminum. Also proposed is a method for producing this cartridge system (1).