A tapping apparatus (1), provided with a container (2) and a pressure control device (10) for controlling pressure in an inner space (3) of the container, wherein the pressure control device (10) includes a compartment (31) with a pressure medium therein and a dispensing opening (30) with a valve mechanism (12), wherein an operating element (15) is provided for operation of the valve mechanism by a user, for supplying an amount of pressure medium from the compartment (31) into an inner space (3) of the container.