A brewing apparatus for a coffee machine, in particular for domestic use, comprises a housing (10) which encloses a brewing chamber (19) and has a nozzle assembly (8, 9, 11) arranged on one side and a base (12) with an outflow (40) for the brewed fluid arranged on an opposite side, a sealing element (20) being provided between the nozzle assembly (8, 9, 11) and housing (10). According to the invention, the sealing element (20) is retained on the nozzle assembly (8, 9, 11) such that it can be moved in the direction of the housing (10) and of the brewing chamber (19). Sealing can thus take place straightforwardly and, in addition, it is possible to configure the volume of the brewing chamber (19) in a variable manner via the sealing element (20).