I came across the following post on slashdot Hacking Vodka
Posted by michael on Saturday November 20, @12:06AM
from the everclear dept.
enrico_suave writes "A group of geeks aimed to find out whether running cheap vodka through a brita water filter would make it drinkable. They claim after several passes through the filter the cheap vodka surpassed the premium Ketel One in drinkability tests. I think they should have done the test 'double blind' although drinking Vladmir Vodka probably could make you go blind anyways... =)"