A portioned container (1), for the preparation of a beverage in a beverage producing device, comprising a body (2) having a main cavity (3) and a foil (6) connected to the body for closing said main cavity; said main cavity (3) containing beverage ingredients (5), wherein the foil (6) is perforable in axial direction above the cavity by an elongated intruding member (15) of the beverage preparation device, wherein the foil (6) comprises at least a base layer (7) and at least a tightness-producing layer (8); said tightness-producing layer (8) constituting an inner layer underneath the base layer (7); wherein said tightness-producing layers (8) and said base layer (7) are adhesively bonded above the cavity (3) at least in a first region (9) of the foil and are free of adhesive bond in at least a second region (10) or tightness-producing region of the foil such second region being the region intended for being perforated by the elongated intruding member (15) forming a tightness engagement with the surface of the elongated intruding member (15).
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