Re-usable beverage filter cartridge

For use in a single serve beverage brewer in which a measured charge of a dry beverage medium is infused with a metered amount of heated liquid to produce a beverage medium, a reusable beverage filter cartridge for containing the beverage medium and for accommodating an inflow of said heated liquid and an outflow of said beverage medium, said cartridge comprising:

• a cup-shaped housing having a top opening and a closed bottom;
• an outlet port in said closed bottom;
• a filter internally subdividing said housing into a first chamber accessible via said top opening and a second chamber communicating with said outlet port, said first chamber being configured and dimensioned to contain said beverage medium;
• a lid;
• means for removably securing said lid to said housing in a position closing said top opening;
• an inlet port in said lid for admitting heated liquid into said first chamber for infusion with a beverage medium contained therein, said filter being permeable to accommodate a flow therethrough of the resulting beverage into said second chamber and out through said outlet port;
• and
• baffle means underlying said lid for diffusing the heated liquid received in said first chamber via said inlet port, said baffle means comprising a circular disc having its center aligned with said inlet port, and having an upper surface interrupted by grooves emanating from said center.