Aroma: Very low to no malt aroma. A pleasant, very subtle fruit aroma from fermentation (apple, cherry or pear) is desirable, but not always present. A low noble hop aroma is optional but not out of place (it is present only in a small minority of authentic versions). Some yeasts may give a slight winy or sulfury character (this characteristic is also optional, but not a fault).
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Appearance: Very pale gold to light gold. Authentic versions are filtered to a brilliant clarity. Has a delicate white head that may not persist.
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Flavor: Very low to no malt aroma. A pleasant, very subtle fruit aroma from fermentation (apple, cherry or pear) is desirable, but not always present. A low noble hop aroma is optional but not out of place (it is present only in a small minority of authentic versions). Some yeasts may give a slight winy or sulfury character (this characteristic is also optional, but not a fault).
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Mouthfeel: Smooth and crisp. Light body, although a few versions may be medium-light. Medium carbonation. Highly attenuated.
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Overall Impression: Very low to no malt aroma. A pleasant, very subtle fruit aroma from fermentation (apple, cherry or pear) is desirable, but not always present. A low noble hop aroma is optional but not out of place (it is present only in a small minority of authentic versions). Some yeasts may give a slight winy or sulfury character (this characteristic is also optional, but not a fault).
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History: Kölsch is an appellation protected by the Kölsch Konvention, and is restricted to the 20 or so breweries in and around Cologne (Köln). The Konvention simply defines the beer as a "light, highly attenuated, hop-accentuated, clear top-fermenting vollbier." The traditional serving of this beer in the cellars of Cologne is a novel experience. Typically waiters tour the crowded cellars with baskets filled with glasses of beer. Empty glasses are quickly replaced and the waiters simply place an extra tally mark on the customer's coaster for each beer consumed; payment is then for the number of tally marks. The waiters are famously surly and trying to order anything other than Kölsch is unlikely to make you popular.
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Comments: Served in a tall, narrow 200ml glass called a "Stange." Each Cologne brewery produces a beer of different character, and each interprets the Konvention slightly differently. Allow for a range of variation within the style when judging. Note that drier versions may seem hoppier or more bitter than the IBU specifications might suggest. Due to its delicate flavor profile, Kölsch tends to have a relatively short shelf-life; older examples can show some oxidation defects. Some Cologne breweries (e.g., Dom, Hellers) are now producing young, unfiltered versions known as Wiess (which should not be entered in this category).
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Ingredients: German noble hops (Hallertau, Tettnang, Spalt or Hersbrucker). German pils or pale malt. Attenuative, clean ale yeast. Up to 20% wheat may be used, but this is quite rare in authentic versions. Extremely soft water. Traditionally uses a step mash program, although good results can be obtained using a single rest at 149°F. Fermented at cool ale temperatures (59-65°F, although many Cologne brewers ferment at 70°F) and lager for at least a month.
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Commercial Examples: Available in Cologne only: PJ Früh, Hellers, Malzmühle, Paeffgen, Sion, Peters, Dom; import versions available in parts of North America: Reissdorf, Gaffel; US versions: Goose Island Summertime, Crooked River Kölsch, Harpoon Summer Beer, Capitol City Capitol Kölsch
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