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