Container attachment

A container attachment with a container lid provided with a lid upper side and with a lid bottom side, a compressed gas line which extends through the container lid and which has a compressed gas inlet opening on the lid upper side and a compressed gas outlet opening on the lid bottom side, a liquid line which extends through the container lid and which has a liquid outlet opening on the lid upper side and a liquid inlet opening on the lid bottom side, a shut-off valve connected in the liquid line and a shut-off valve actuation element mounted on the container lid and by which the shut-off valve may be actuated,

• wherein a flavour capsule which is detachably connectable and/or connected to the container lid on the lid upper side and which has a capsule outlet opening, a capsule inlet opening and a capsule interior connecting the capsule outlet and the capsule inlet,
• wherein the capsule inlet opening in a state of the flavour capsule connected to the container lid is connected to the liquid outlet opening.