Wyeast 2565 Kolsch
Product details
| Management number | 253678843 | Release Date | 2026/10/24 | List Price | CA$5.60 | Model Number | 253678843 | ||
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Brew crisp, authentic German-style ales with Wyeast 2565 Kölsch, a premium liquid yeast strain sourced from a traditional brewery in Cologne, Germany. Known for producing a clean, lager-like finish with delicate fruit esters, this versatile top-cropping strain allows brewers to create refined hybrid beers while fermenting at ale temperatures. Each Wyeast Activator™ pack contains approximately 100 billion cells, providing enough healthy yeast to ferment a standard 5-gallon batch under appropriate conditions. Wyeast 2565 is ideal for brewing Kölsch, Cream Ale, Altbier, American Wheat Beer, Berliner Weisse, and Bière de Garde.
Wyeast 2565 produces a smooth, crisp fermentation profile with subtle fruit character and little to no detectable diacetyl. It performs especially well at the cooler end of its fermentation range, creating a clean finish that closely resembles a traditional lager while maintaining the efficiency of ale fermentation. Its naturally low flocculation keeps yeast in suspension longer, allowing for excellent flavor development, though additional conditioning time or filtration may be needed to achieve brilliant clarity.
This liquid ale yeast features low flocculation, 73–77% attenuation, and an alcohol tolerance of approximately 10% ABV. It performs best between 56–70°F (13–21°C) and is packaged with approximately 100 billion cells for dependable fermentation performance and consistent brewing results. Its broad fermentation range also makes it an excellent choice for brewing clean pseudo-lagers without dedicated lager fermentation equipment.
For best results, store refrigerated between 33–38°F and do not freeze. Pitch cold into well-oxygenated wort and ferment within the recommended temperature range. One Activator™ pack is suitable for many standard-strength 5-gallon batches, while a yeast starter is recommended for older yeast packs or higher-gravity beers. Allow additional cold conditioning time after fermentation to encourage clarification and develop the strain's signature crisp, lager-like finish.
Trusted by homebrewers and professional brewers alike, Wyeast 2565 Kölsch delivers dependable fermentation, clean flavor, and authentic German brewing character. Its healthy cell count, reliable performance, and crisp hybrid profile make it an outstanding choice for brewing Kölsch and other delicate ale styles with exceptional balance, clarity, and drinkability.
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