| abstract |
(57) [Summary] [Purpose] Injecting a mixture of water and air at a predetermined pressure into a sealed cartridge containing a beverage preparation substance, (EN) A method of pressing a flat extraction surface as flat as possible against a protrusion to cause cleavage to extract, and an apparatus for performing the method. A water injector (7), a detachable cartridge holder support (15) held under the water injector, and an internal recess having a shape that substantially conforms to the outer shape of the cartridge (1) to be extracted. An annular element (8) provided with a point and a cartridge holder (11) arranged in the support and provided with a convex element (13) on the flow grid (12), The lower portion of the annular element is configured to cooperate with the peripheral edge of the retainer to hold the cartridge in place and ensure fluid tightness during the extraction process. |