Fluid packaging container of substantially rigid, or semi rigid construction. The container being configured to be operatively connectable to a beverage dispensing station. The fluid packaging container defines an interior space and contains a first volume of a liquid ingredient and a second volume of gas. In use the first and second volumes are each variable between a volume of substantially zero and a volume corresponding substantially to the interior space and being complementary to one another. Thereby the first and second volume together fill the interior space. The fluid packaging container in particular includes a fluid outlet arranged to communicate with the beverage dispensing station and pressure equalising means for maintaining a predefined pressure in the second volume, irrespective of liquid withdrawn from the interior space.
