An assembly for dispensing a beverage includes a collapsible beverage container having an outlet with a connecting element; a pressure chamber configured to accommodate the beverage container and including a lid; a heat transfer system operable on the pressure chamber; a pressure source operable to provide a predetermined pressure to the interior of the pressure chamber; and a dispensing line connectable with the outlet of the beverage container so as to extend from the outlet through an opening in the lid to a dispensing tap. The beverage is dispensed by providing the predetermined pressure to the interior of the pressure chamber and the beverage container therein. As the dispensing line is opened at the dispensing tap, the beverage container collapses in response to the applied pressure, forcing the beverage into the dispensing line and out the tap without being supplied with or being in contact with any gas.