Abstract: A portion capsule base body defines a directed axis and is fillable with an extraction material. The base body has a bottom region, a circumferential side wall adjoining the bottom region and having an outer surface, an a circumferential collar region adjoining the side wall, and through which an opening is defined. The axis is centrally extending through the bottom region and through the opening, and defines an axial direction pointing from the bottom region through the opening. A distance measured perpendicular to the axis is referred to as the axial distance, and the side wall has at least one ramp element by which at least one ramp region is defined in which the axial distance of the outer surface is increasing along the axial direction.

Abstract: A system for preparing a brewed product, the system including a portion capsule containing an extraction material, and an extraction appliance for preparing the brewed product from the extraction material contained in the portion capsule. The extraction appliance has an injection device for introducing a brewing liquid into the portion capsule and an extraction device for driving an extraction product out of the portion capsule. The injection device and the extraction device define between them an accommodation space for the portion capsule. The extraction device has a pressure device, by which a wall of the portion capsule inserted in the accommodation space, which wall faces toward the extraction device, can be pressed in toward the capsule interior in order to compact the extraction material contained in the portion capsule before the injection device introduces brewing liquid into the portion capsule.