Distilled seven times this new super-premium vodka features pure “esker” water. A cousin of the artesian spring, eskers form when water – in this case, from a glacier – percolates to the surface through layers of clay and gravel, resulting in not only a rare geological formation, but one of the purest water sources on earth. Extraction is managed in an ecologically responsible manner by members of the local Icelandic community. Master Distiller Peter McKay developed a special distillation formula using Icelandic water, non-genetically modified European wheat and a third (secret) ingredient. Retail is $39.95.