Reyka Vodka
Reyka is the first vodka distilled in Iceland. The word "Reyka" derives from the ancient Icelandic word for steam - It is geothermic steam drawn from the center of the earth that powers Iceland's first and only vodka distillery (making it the only eco-friendly vodka on the planet). Much of this can be seen on a virtual tour of Iceland.
This hand-crafted small-batch vodka uses water drawn from a lava field over 4,000 years old; it requires no treatment or demineralization before it is blended with the vodka. After distillation in the Carter-Head Still they filter it through lava rock collected from a local volcanic fields giving the vodka its characteristic Icelandic flavor. Water used for Reyka is so pure that Volvic bottled water has a content of dissolved solids that's five times higher than Reyka's, Evian's level is nearly 15 times higher. [From Wikipedia]