A rather old, rare, and unique German beer style, Kellerbiers are unfiltered and unpasteurized lagers that date back to at least the Middle Ages. The beer is matured, unbunged (beer is exposed), in deep vaults. The final product is a smooth, naturally cloudy beer that's rich in vitamins from the yeast. Hop bitterness can be high and alcohol will vary. Zwickelbier is similar to a Keller, but not as pronounced.

These unfiltered beers are packaged and served with low to moderate amounts of yeast.
They may be filtered and dosed with yeast during packaging.

-Color: Varies depending on the underlying German ale style

-Clarity: Can be clear to moderately cloudy. Slight yeast haze is acceptable and traditional. These beers are unfiltered, but may become clear with age. May exhibit poor head retention.

-Perceived Malt Aroma & Flavor: Kellerbier ales are unfiltered German-style Altbier or Koelsch. Malt aromas and flavors typical of these styles should be present.

-Hop Aroma and Flavor and Bitterness Varies depending on underlying style. Hop character may be muted by the presence of yeast.

-Body: Varies depending on underlying style

-ABV: Varies with style

-Glassware: Mug or Stein

Examples (courtesy of Beer Advocate)
(https://www.beeradvocate.com)


Samuel Adams Kellerbier | Boston Beer Company (Samuel Adams)

Brewed by:
Boston Beer Company (Samuel Adams)
Massachusetts, United States
samueladams.com

Style: German Kellerbier / Zwickelbier

Alcohol by volume (ABV): 5.00%

Notes / Commercial Description:
Kellerbiers originated in German cellars when brewers couldn’t wait to taste the fruits of their labors, so they tapped young beers straight from barrels. Our version ages on oak chips for a refreshing juxtaposition of light unfiltered malts with an intriguing woodsy note.


Southern Gothic | Sierra Nevada Brewing Co.

Brewed by:
Sierra Nevada Brewing Co.
California, United States
sierranevada.com

Style: German Kellerbier / Zwickelbier

Alcohol by volume (ABV): 5.60%

Notes / Commercial Description:
Steeped in tradition, yet ready for anything—that pretty much sums up our Southern Gothic Unfiltered Pils. This hop-forward but light-bodied pilsner is crisp and drinkable, perfect for an afternoon on the porch or a night down at the pub. We left it unfiltered and raw to bring out its complexity and add a depth of flavor.

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Michael Potorti is the Host of Craft Beer Storm and Founder/Brewer at Beara Brewing Co. in Portsmouth, NH

Michael Potorti
Founder/Brewer
Host of "Craft Beer Storm" Podcast
michael@craftbeerstorm.com
michael@bearairishbrew.com

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