2565 Kolsch Yeast

Wyeast 2565 Kölsch

Traditional ale yeast used in the making of Kolsch style beers.  Produces some slight fruity and winey characters, with low to no diacetyl.  Ferments well in the cold 55 to 60 degree range.  Some sulfur production is noticable, but clears out with a few weeks of cold conditioning/lagering.

• Origin: Weihenstephan 165

• Flocculation:Low

• Attenuation: 73-77%

• Temperature Range: 56-70° F (13-21° C)

• Alcohol Tolerance: approximately 10% ABV


American Wheat or Rye Beer

Berliner Weisse

Bière de Garde

Cream Ale

Düsseldorf Altbier

Fruit Beer


Northern German Altbier

Spice, Herb, or Vegetable Beer

Warranty : Our Product Warranty states that we guarantee the viability of the yeast in our Activator™ packages for 6 months from the manufacture date assuming that they have been properly shipped, stored and handled. Our superior packaging material provides 100% oxygen barrier and UV light protection making this exceptional guarantee possible. During this 6 month guaranteed shelf life, some loss of viability is to be expected. This will vary from one strain to another. Activator™ packages that are 4 months old or older may require additional time to swell after activation.

Activator™ packages will sometimes swell slightly, or moderately during shipping or later while properly stored. This is not an indication of deterioration if the package is less than 6 months old and has been properly handled. This is result of trace amounts of nutrients, still available at the time packaging, causing small amount of culture activity and CO2 production. Some strains are more prone to this than others.

Sterile Packaged Product – UV Light Barrier – 100% Guaranteed Pure

Keep Refrigerated. Do not freeze.

Best if Used by: This package is best when used within 6 months of the manufacturer’s date when stored between 34-40°F (1-4°C). Older yeast or yeast that has been exposed to higher or lower temperatures may take longer to become active or swell.


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2565 Kolsch Yeast

  • Brand: Wyeast
  • Product Code: 2565XL
  • Availability: In Stock
  • $8.65

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Tags: 2565, kolsch, yeast, wyeast, ale