a system for providing an infusion chamber provides a clip assembly for attachment within a drinking vessel . a box assembly contains an infusion chamber and may be attached to the clip assembly . the box assembly has a top swinging lid to accept dry ice and other materials suitable for infusion . the bottom of the box assembly features a communication void or slot at the bottom of the box to allow the contents of the box assembly to mix with the surrounding drink , but yet not fall loose into the drink . the clip features contoured adhesive wedges to assist in attachment of the clip to the inside portions of a drinking container . the clip assembly has a thin stop tab or shelf that fits into the box assembly . a side hook from the box assembly is supported by the lower portion of the stop tab or shelf of the clip assembly . the upper or top side of the stop tab or shelf is trapped by a stop tab of the box assembly . the use of dry ice within the box assembly and use of liquid such as punch in the drinking vessel , may result vapor from the dry ice to rise though the drink and out of the drink , to create a witches brew effect while cooling and mixing but not diluting the drink as typical with ice made from water .