The present invention relates to a capsule 102 containing dry infusible matter 101 for preparing infused beverages, and comprising: a front face 103 comprising a filter wall 114; a rim 105 surrounding said front face 103 and presenting a tapered outer edge 108; a back face 104, substantially opposed to said front face 103, and comprising a frangible region 116 for the injection of infusing liquid; and a solid envelope 106 between said rim 105 and said back face 104. The present invention also relates to a device 120 for preparing infused beverages comprising: said capsule 102, with the front face 103 in a substantially vertical position; and injecting means 124 for introducing an infusing liquid into said capsule 102 through said frangible region 116 when said capsule 102 is in said receptacle 118; and an infusion vessel 123 with a substantially vertical side opening 125 to said receptacle 118, so as to be in fluid connection with said filter wall 114 of the capsule 102 when said capsule 102 is in said receptacle 118, and an openable and closable bottom opening 127 to allow an infused beverage to flow out of the infusion vessel 123. Finally, the present invention also relates to a method of preparing infused beverages using said capsule 102 and device 120.