Container with liquid for attachment to and mixing with poured liquid of conventional can

A device for selective attachment to a conventional aluminum beverage can with internal liquid-holding pouch. A flavoring, alcohol based, energy drink, a medication, etc. can be contained in the device and mixed with the liquid contained in beverage cans. With the device atop a can and the device and can opened, tilting and pouring the liquid of the can causes liquid within the device to be dispensed and entrained into the stream of the liquid exiting the beverage can. A mixed drink can be provided comprised of the first liquid of the device and the second liquid provided by the can. Substantially uniform concentration of the two liquids is maintained from start to finish. Mixing occurs on an incremental basis and there is no substantial mixing of liquid from the device within the chamber of the can or from the liquid of the can within the cavity/pouch of the device.