Abstract: The invention relates to a capsule associated with the perforating device of a machine used to prepare drinks by injecting water into the capsule. The capsule includes a side wall and a base forming a self-supporting shell, an upper wall enclosing a sealed volume inside the shell that contains a substance to be extracted, and a filter membrane in the sealed volume disposed on the base. The base has a peripheral portion and a central portion, the central portion extending beneath the peripheral portion with a depth and having a low wall portion configured to be perforated or cut by the perforating device in order to create one or more outlets for the drink flowing through the filter membrane. The peripheral portion comprises flow channels extending radially from the low wall portion to the side wall and being disposed between the support spokes to support the filter membrane.