The present invention relates to a capsule (1) comprising at least a first structural element (2) in the form of a container and a second structural element (3) in the form of a cover, designed to contain an individual portion of an edible substance, wherein the second structural element (3) comprises a passage wall (4) surrounded over at least most of its periphery by a weakened material zone (41) with a reduced thickness upstream and downstream of the passage wall (4). The present invention further relates to a system for preparing edible products, including a capsule (1), a device for preparing edible products, the device comprising at least one brewing device (10) with injection means (13) designed to apply a mechanical pressure to the passage wall in a zone of the passage wall (4) opposite the weakened material zone (41) with a reduced thickness.
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