40 is preferably substantially elliptical and includes at its center a vent or drain hole 150 that allows the brewed coffee to exit the brewing basket 10 adjacent the drain hole 150 is a pair of upstanding cylindrical posts 160 e g risers spacers or columns to protect the drain hole from being clogged or occluded by the filter packet 100 as it sags into the secondary compartment 110 the two posts 160 act like tent poles to support the middle portion of the filter packet as it descends into the sump as shown in fig2 surrounding the drain hole 150 is a pair of elliptical ridges 170 or walls that project upwardly from the bottom 140 of the sump 110 the height of the ridges 170 are approximately one eighth to one quarter of an inch and may be roughly half the height of the posts 160 that form two substantially concentric ellipses centered about the drain hole 150 each ellipse includes at ends defined by the major axis of the ellipse a break or gap 180 defining an opening to allow liquid to enter the reservoir 190 defined by the ellipses water collecting at the bottom of the sump 110 will gradually reach the openings 180 of the ellipses and feed into the reservoir 190 as long as the flow rate into the basket 10 is greater than the flow rate exiting the basket through the drain hole 150 along the interior of the main compartment 20 on a first side wall 33 is a rib 200 integrally formed therewith and extending inward from the side wall 39 s flat inner surface the rib 200 has a flat contact surface 210 and side surfaces 220 that break sharply away from the flat contact.