The dispensing assembly includes a cartridge having at least two containers and accessories. The fastening area (6) of the cartridge (1) and the fastening areas (9) of the accessories (4) are configured such that the accessories are attachable to the cartridge by plugging them on without a twisting motion and removable therefrom by twisting them one relative to another. In a further developed embodiment, the parts comprise coding elements which serve as aligning means and for preventing that the accessory is plugged onto the cartridge in the wrong orientation. An assembly of this kind allows an easy attachment and removal of an accessory such as a mixer or a closure cap and can be produced inexpensively.