Patent ID: 8491948

Claim:
A capsule for the preparation of a beverage in a beverage machine, the capsule comprising: a brewing enclosure comprising at least one beverage ingredient; filtering means defining at least one filtering side of the brewing enclosure; beverage flow guiding means for guiding the beverage to a beverage outlet of the capsule; a shell and a protective cover attached to the shell and forming with the shell a gas tight container for the beverage ingredients; a vertical overflow wall that is located in a path of a brewed liquid after the filtering means and comprises at least one overflow aperture above the median horizontal plane of the overflow wall, and the overflow wall is substantially free of apertures below the median horizontal plane; perforation means comprising an opening element designed to open the gas-tight container in order to create the beverage outlet, wherein the opening element is a perforating element for perforating an outlet in a wall of the container; and the gas tight container integrally housing the beverage flow guiding means and the opening element.