a beverage brewer having a cartridge for placement of a disposable single use filter basket filled with beverage grounds . the filter basket includes a plastic frame having a bottom , a plurality of ribs , and a top rim that define a plurality of openings covered by a non - woven or woven plastic filter material . the basket filled with beverage grounds is enclosed with a film cover . the inlet probe of the brewer pierces the cover and admits a heated liquid into the beverage grounds , and creates a brewed beverage that flows through the filter material and exits an opening in a bottom portion of the cartridge .