Abstract: A beverage, particularly coffee, is prepared using a portion capsule. The portion capsule has a base element for receiving an extraction product. Further, a method for producing the portion capsule, a composite material able to be produced particularly efficiently in the setting of producing coffee portion capsules, and a method for producing the composite material. The composite material includes a component produced from silver skins of coffee cherries. The portion capsule includes the composite material.

Abstract: A portion capsule includes a base element, for example like a cup, having a capsule base and a circumferential side wall. A cover element is attached to the base element and forms together with the same an interior space having an extraction material region filled with an extraction material. A filter element is placed in the interior space. The filter element separates the extraction material region from the capsule base or from a capsule cover formed by the cover element. The filter element is formed of an open pore foam material.