Method for brewing beverage and cartridge containing infusible material

1. A cartridge for connecting to a brew chamber for brewing a beverage, comprising a first element and a second element,

wherein the first element comprises a side wall and a bottom wall,

wherein the side wall and bottom wall are made from a water-impermeable material,

wherein the bottom wall contains a protuberance that directs to the outside of the first element,

wherein the bottom wall contains an opening,

wherein the opening comprises a filter which is permeable to water,

wherein the top is optionally closable by a seal and which is attachable to the upper rim of the side wall,

and wherein the bottom wall comprises one or more notches directed to the inside of the first element,

and wherein the second element comprises a bottom wall,

wherein the bottom wall is made from a water-impermeable material,

wherein the bottom wall comprises an opening ( 73 ) which is able to interlock with protuberance ( 54 ) in order to create a water-tight connection,

wherein the bottom wall contains one or more protuberances,

and wherein the second element is moveable relative to the first element about the corresponding notch and protuberance.

2. A cartridge according to claim 1 , wherein the side wall and bottom wall of the first element comprise polypropylene.

3. A cartridge according to claim 1 , wherein the pores of the filter have a size of between 0.1 and 1 millimeter.

4. A cartridge according to claim 1 , wherein the cartridge contains an infusible particulate material having a particle size larger than the pore size of the filter.

5. A cartridge according to claim 1 , wherein the infusible particulate material comprises at least one of tea leaves or a herbal composition.

6. A method for opening a cartridge according to claim 1 , wherein the protuberance of the first element of the cartridge is interconnected with the opening of the second element to close the bottom wall of the first element, wherein the second element is moved from the first element about the corresponding notch and protuberance, to expose the filter to the atmosphere.

7. A method for brewing a beverage in a brewing apparatus using a cartridge according to claim 4 ,

wherein the apparatus comprises a brew chamber that comprises a side wall, a bottom rim, a top wall, and an opening, and means to connect a cartridge to the brew chamber,

comprising the steps:

a) optionally releasing seal from the cartridge,

wherein the protuberance of the first element is interconnected with the opening of the second element to close the bottom wall of the first element;

b) putting the cartridge into the brewing machine and connecting the top rim of the first element of the cartridge to the bottom rim of the brew chamber, such that a water-tight connection is made;

c) optionally prior to or simultaneous with step b), moving the second element of the cartridge relative to the first element of the cartridge, such that the filter is exposed to the atmosphere;

d) drawing gas out of the brew chamber through opening or through optional opening, and simultaneously drawing gas into the brew chamber through opening and filter of the cartridge;

e) at least partly simultaneous with step d), filling the brew chamber with water, and brewing the beverage by mixing water and infusible particulate material in the brew chamber; and

f) terminating drawing of gas out of the brew chamber and discharging the brewed beverage through opening.