Why Filtration Matters for Beer for microbrewery

For craft beer, filtration is one important keypoint to think about it for long shelf time. It affect the market sales. For microbrewery, from diatomaceous earth to sleek new centrifuges, there’s a step that many of your favorite beers go through, and while you might not immediately taste a difference, you can sure see it.

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Similar stories abound in the craft- brewing industry as more breweries adopt centrifuge technology. After fermented beer enters the rapidly rotating centrifuge bowl, solids such as yeast, proteins, and hops debris are forced to the bottom and outer discharge chamber, while the remaining liquid avoids oxygen and flows through an outlet. In addition to improving the yield of a batch, breweries can turn over tanks quicker, and some brewers claim improvements to the aroma and flavor of their beer.
So user-friendly, in fact, that brewers can manipulate the level of turbidity in the finished beer, meaning they can centrifuge a hazy IPA without removing all of its haziness. That is especially useful to breweries packaging hazy IPAs for widespread distribution.

While planning to package Mind Haze, a 6.2 percent ABV hazy IPA, Firestone Walker brewers wanted to remove all yeast (which can bring along trace amounts of harsh iso-alpha acids) and hops-pellet dust (which can lead to hops burn, an undesirable “bitter burn in the back of your throat,” according to Brewmaster Matt Brynildson). “We’re selling this beer in the broad market,” Brynildson says, “so we’re centrifuging all the yeast out of that beer, and it still maintains its protein tannin haze.”

But extra time may be the biggest benefit of a centrifuge to brewers.

“The man hours that we would spend restarting the filter on some of these beers that we don’t have to do now—it streamlines the plan,” says Firestone Walker cellar manager Sam Tierney. “It gives us the security of not having these catastrophic situations where we pull in sludge out of the tank, and on the old filter, without the centrifuge, it would be game over. Your run would be done.”

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