All unflavored vodkas are recommended. Due to the many problems of non-kosher ingredients often found in flavorings (such as wine, civet, ambergris etc.), any flavored vodka needs proper Hashgachic approval or thorough investigating into each source and ingredient.
Date: Thu, 10 Jun 93 11:32:26 PDT|
From: Miriam Nadel
Subject: Kosher Whiskey
On another related note, there was an interesting article in the Wall Street Journal this past week about kosher vodka in Poland. The basic dispute is between two rabbis, each of whom claim to be the chief rabbi of Poland. One of them requires vodka to have certification and the other does not. (And so far as I know, most rabbis throughout the world do not require vodka to be certified, though there may be peculiarities about Polish vodka making procedures.)