A pressure dispensing container containing a liquid and closed by a closure having a first aperture offset with respect to the centroid of the closure's base is disclosed. The container is mounted on a dispensing appliance including a first tube to be inserted into the corresponding first, offset aperture of the closure. The closure further having a crenellation in its lower rim mating a crenellation in a structure for receiving the closure of the container. A closure holding structure is located in the holding portion of the appliance and is suitable for receiving in mating relationship the closure of the container such that the first offset aperture of the closure is in direct engaging relationship with the first tube of the appliance.