Kolsch II Yeast | Omega Yeast OYL-044
Omega OYL-044 Kolsch II Yeast for Crisp, Delicate Kolsch-Style Ales
Omega Yeast OYL-044 Kolsch II is a clean, subtle ale strain for brewers who want delicate fruit, soft malt character, and the kind of crisp fermentation profile that works well in Kolsch-style beers and other light, balanced ales. It is a strong choice when you want ale fermentation character with a polished, almost lager-like finish.
Based on Omega's published guidance and current retailer technical references, this strain typically delivers 72% to 78% attenuation, low to medium flocculation, up to 10% ABV tolerance, and a recommended fermentation range of 65 to 69°F. It is also listed as non-phenolic, non-diastatic, and STA1 negative, making it a practical fit for clean hybrid-style ale brewing.
What Omega OYL-044 Contributes to Beer
- Clean Kolsch-style profile: Subtle fruit and a soft malt accent help beers finish crisp and refined
- Hybrid-style flexibility: Useful in Kolsch, cream ale, and other light styles that benefit from clean fermentation
- Balanced attenuation: Helps beers stay refreshing and structured without feeling thin
- Low to medium flocculation: Supports bright beer with proper conditioning and cellar handling
Omega OYL-044 Specifications
- Attenuation: 72% to 78%
- Flocculation: Low to Medium
- Alcohol tolerance: up to 10% ABV
- Fermentation temperature: 65 to 69°F (18 to 21°C)
- Phenolic: No
- Diastatic: No
- STA1: Negative
Best Styles for OYL-044 Kolsch II
- Kolsch-Style Ale
- Cream Ale
- Blonde Ale
- Light hybrid-style ales
- Other clean, delicate ale fermentations
Why Brewers Choose OYL-044
This strain is a strong fit when a recipe needs gentle ale expression rather than bold ester character. It helps brewers build beers with subtle fruit, clean structure, and the kind of restrained fermentation profile that works especially well in delicate, highly drinkable styles.
For brewers who want a crisp and refined strain for Kolsch-style and other lighter ales, OYL-044 is a reliable option.
Liquid Yeast Storage and Shipping
We store liquid yeast in temperature-monitored refrigeration to help preserve yeast health until shipment. Once in transit, weather and carrier handling are outside our control, so liquid yeast customers should choose shipping protection based on season, route, and transit time.
Expedited shipping, insulated mailers, and ice packs can materially reduce risk for liquid yeast during warm-weather transit. Dry yeast is generally much less risky to ship than liquid yeast.
Related Yeast and Brewing Resources
Browse our full Omega Yeast collection for more ale and specialty strains. You can also review our yeast shipping best practices page before ordering liquid yeast in warmer weather.
If you want a clean, crisp strain for Kolsch-style brewing and other delicate ales, Omega OYL-044 is a strong choice.