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Does Putting Cheap Vodka Through a Water Filter Make it Better?

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With a little creativity and a little planning, Catherine Lamb shows us how to make the most of a tight budget—without sacrificing flavor or variety. 

Today: We test the rumor about filtering vodka, and share our findings with the world.

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Cocktails

If you ever went to a frat party in college, you most likely encountered cheap vodka. It's named something generically Russian, comes in a plastic bottle, and is often poured into a vat of Jungle Juice. If you partook in this cheap vodka, you most likely woke up the next day a wee bit hungover. Don't be embarrassed: We've all been there.

It was at one of these parties that I first heard the rumor that if you filter cheap vodka several times through a simple water filter, it will taste just as good as top-shelf stuff. But could it really be that easy? Can straw really be spun into gold?

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As a sucker for anything DIY, especially when it comes to saving money, I had to find out. 

Bloody Mary

First, a little vodka background knowledge. Made from fermented and distilled grain (like corn, rye, or wheat), vodka is typically distilled at least three times and passed through a charcoal filter before being bottled and sold. Since vodka doesn't have a distinct flavor, you can distinguish the good stuff from the bad by texture and harshness. A good vodka will go down smooth and easy, while a bad one will burn. Higher quality spirits are distilled for longer and filtered more thoroughly—basically, it's the time put into purifying the vodka that makes the difference more the grains themselves.

Now, a bit of water filter background. Filtration systems use activated carbon to remove impurities like zinc and copper ando to reduce the chlorine-y taste of water. Overall, water that's been put through a filter should end up purer, both in terms of taste and composition. 

So, will the same basic principle work when applied to the hard stuff? Will cheap vodka, put through a Brita filter, end up smoother and purer-tasting? Let's test and find out.

Vodka

I did two rounds of tests: one with plain vodka, sipped as-is, and one with the vodka incorporated into a cocktail. For the pared-down vodka test, I gave each of my five tasters three shot glasses: one contained a cheap vodka, one had that same cheap vodka that had been put through a Brita filter six times, and one was filled with a top-shelf vodka. 

The results were pretty consistent: All taste testers preferred the top-shelf vodka, saying it was smoother and easier to drink. Three of the five could identify the filtered vodka as a step above the unfiltered, but it was still leagues behind the expensive stuff. And the cheap, unfiltered vodka? Let's just say the word "gasoline" was thrown around a few times. 

 

Basil-Vodka Gimlet

Next, I gave the testers two versions of a Basil-Vodka Gimlet: One was made with the filtered cheap vodka; the other was made with the top-shelf vodka. If I were being a true scientist, I would have made a third cocktail with the unfiltered cheap vodka as a control. Unfortunately, by the time I got around to shaking up the gimlet, I realized that I'd used up all the unfiltered stuff, so I went with a simplified test.

For this test, the panel was almost evenly split: Half preferred the top-shelf vodka, the other half liked the filtered vodka, citing as having "a cleaner taste" that let the flavors of basil and lime shine through.  

 

Vesper Martini

Conclusion: 

  • If you're drinking your vodka straight, Russian-style, or in a minimalist drink like a martini, it's worth springing for top shelf booze.
  • However, if your vodka is going in a jazzed-up cocktail, especially one as flavorful as a Bloody Mary or a Moscow Mule, lower-range vodka might be just fine. (In fact, it might be better, as some higher-priced vodkas can have a distinct flavor or sweetness, while cheaper brands won't interfere with the taste of your cocktail.)
  • And if it's a drink with minimal bells and whistles but flavorful supporting alcohols, like an Italian Greyhound or the Basil-Vodka Gimlet, it might even be worth it to give filtering a go.  

Have you tested the filtered vodka hypothesis? What were your findings?

Tags: vodka, cheap, alcohol, broke kitchen, budget, cocktails, entertaining