The Complete Book of Spirits, offers a good history of Polish origins where wine was distilled by freezing it in the 1400s. Since water freezes at a higher temperature than alcohol, the purer alcohol was allowed to drip out the bottom of the frozen block of wine. This produced gorzalka, which the Poles proudly proclaim as the first vodka. This is, of course, the opposite of distillation. Meanwhile, the Russians were happily making zizennia voda or "water of life" which became the diminutive "vodka". This is the Russian equivalent of adding an "ie" on the end of "John" to make "Johnnie" or as Blue has it: "dear little vodka". They began truly distilling (heating the wine or grain mash so that the alcohol evaporates out) around 1430. They also standardized vodka through the efforts of Dmirtry Mendeleev and began charcoal filtration from Piotr Smirnov (later Smirnoff).