Abstract: An infusion bag of liquid-pervious filter material has a bottom edge and opposite side edges and is formed of face-to-face arranged first and second panels secured to one another along the bottom edge and the side edges. The first and second panels together define an opening spaced from the bottom edge. The first and second panels have a length dimension viewed in a direction away from the bottom edge. The length dimension of the first panel is greater than the length dimension of the second panel, whereby the first panel includes a flap extending beyond the opening in a direction away from the bottom edge.