OYL-109 German Lager II
Liquid Lager yeast from Omega Yeast.
Lab
Omega Yeast· Lager · Liquid · OYL-109
Omega Yeast· Lager · Liquid · OYL-109Specs
Attenuation
68–76%
The share of sugars the yeast ferments out. Higher attenuation means a drier, stronger beer.
Optimal temp
10–13°C
50–55°F
The range where this strain ferments cleanly, without throwing off-flavors. Most brewers pitch near the low end.
Flocculation
Med-high
How readily the yeast clumps together and drops clear once fermentation winds down.
Alcohol tolerance
≈9% ABV
The rough ABV ceiling where the yeast stresses out and stops fermenting.
Genetic traits
Phenolics
POF−
Ferments clean
Phenolically clean (POF-negative). No clove or spice, so malt, esters, and hops come through unmasked. The norm for American and British ales and most lagers.
Diastatic
STA-1−
Not diastatic
Does not carry the STA1 (diastaticus) gene. It attenuates normally, with no diastaticus over-attenuation or gushing risk.
Same strain, other labs
Potential substitutes for OYL-109 German Lager II
Usually used in
Lagers
Common questions
- What is the OYL-109 German Lager II equivalent?
- WLP838 Southern German Lager Yeast — the same strain from another lab, the Southern German Lager (WLP838) strain.
- What is OYL-109 German Lager II's attenuation?
- 68–76% apparent attenuation.
- What temperature should I ferment OYL-109 German Lager II at?
- 10–13°C is the recommended range.
- What beer styles is OYL-109 German Lager II good for?
- Lagers.
- What can I substitute for OYL-109 German Lager II?
- LalBrew Diamond Lager and 2308 Munich Lager.
Brew with OYL-109 German Lager II
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