L18 The GOAT
Liquid Lager yeast from Imperial Yeast.
Lab
Imperial Yeast· Lager · Liquid · L18
Imperial Yeast· Lager · Liquid · L18Specs
Attenuation
70–74%
The share of sugars the yeast ferments out. Higher attenuation means a drier, stronger beer.
Optimal temp
9–13°C
48–55°F
The range where this strain ferments cleanly, without throwing off-flavors. Most brewers pitch near the low end.
Flocculation
Medium
How readily the yeast clumps together and drops clear once fermentation winds down.
Alcohol tolerance
≈12% 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
Common questions
- What is the L18 The GOAT equivalent?
- OYL-111 German Bock, WLP833 German Bock Lager Yeast, and 2487-PC Hella Bock Lager — the same strain from other labs, the Ayinger (German Bock, WLP833) strain.
- What is L18 The GOAT's attenuation?
- 70–74% apparent attenuation.
- What temperature should I ferment L18 The GOAT at?
- 9–13°C is the recommended range.
Brew with L18 The GOAT
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