It would seem to me that if you took the Kellty Kettle or the Thermette and fabricated an adaptor w/ a metal coil to fit the pouring spout you could jury-rig an efficient distiller. The companies might even be willing to develop a proto-type for you to field trial as a potential accessory.
WARNING & DISCLAIMER:
SELECT AND USE OUTDOORS AND SURVIVAL EQUIPMENT, SUPPLIES AND TECHNIQUES AT YOUR OWN RISK. Information posted
on this forum is not reviewed for accuracy and may not be reliable, use at your own risk. Please
review the full WARNING & DISCLAIMER about information on this
site.