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An enthusiastically top cropping, lager-like ale strain from Koln, Kolsch I is lightly fruity, crisp and clean, and accentuates hop flavors well. This strain can be fermented colder than Kolsch II (OYL- 044), and is powdery and slow to drop clear (filtering recommended). Kolsch II (OYL-044) is a little easier to manage. Sulfur disappears with age.
Brewing Properties of KOLSCH I
The functional properties of brewing yeasts have a direct impact on the performance, quality and economics of the resulting beer.
The alcohol tolerance determines the ABV at which yeast cells go dormant and stop fermenting.
Attenuation refers to the percentage of sugars converted to alcohol and carbon dioxide, as measured by specific gravity.
Flocculation refers to the tendency of yeast to form clumps called "flocs" that drop in order to make the beer clear.
The optimal temperature is the range in which the yeast performs best without putting off any off-flavors. Pitching the yeast into wort usually happens at the low end of the temperature range.
Comparable Beer Yeast
If you cannot find KOLSCH I anywhere, you can substitute one of the following yeasts for a similar result.
Common Beer Styles using KOLSCH I
These are the most popular beer styles that make use of the KOLSCH I yeast:
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