A system, method and capsule for preparing a predetermined quantity of beverage suitable for consumption using an extractable product is disclosed. The system comprises an exchangeable capsule, and an apparatus comprising a receptacle for holding the exchangeable capsule, and a fluid dispensing device for supplying a fluid to the exchangeable capsule. The exchangeable capsule comprises a circumferential wall, a bottom, and a lid. The wall, bottom and lid enclose an inner space comprising the extractable product. The bottom comprises an entrance layer for supplying an amount of a fluid by the fluid dispensing device through the entrance layer to the capsule. The lid comprises an exit layer for supplying a prepared beverage through the exit layer from the capsule to a container. The capsule comprises an additional wall element extending towards the inner space for providing additional stiffness.
