A method for producing a beverage from an ingredient-containing capsule by
inserting a sealed capsule into a capsule enclosure space of a beverage
production device, enclosing the capsule by a relative displacement of at
least two enclosing members which define the capsule enclosure space, and
opening an inlet face of the capsule and injecting a fluid under pressure
into the capsule in order to open an outlet face of the capsule. The
capsule is provided at its outer surface with sealing material which is
exposed to the fluid pressure in the capsule enclosure space. After
enclosing the capsule, the fluid pressure in the capsule at least
partially acts on the sealing material, such that in turn the sealing
material is pressed against one of the enclosing members thus
constituting a flow resistance that is sufficient to guarantee a pressure
build-up inside the capsule sufficient for the pressure-assisted opening
of the outlet face of the capsule.