L17 Harvest
Liquid Lager yeast from Imperial Yeast.
Lab
Imperial Yeast· Lager · Liquid · L17
Imperial Yeast· Lager · Liquid · L17Specs
Attenuation
70–74%
The share of sugars the yeast ferments out. Higher attenuation means a drier, stronger beer.
Optimal temp
10–16°C
50–61°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
≈10% 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
Usually used in
HellesDunkelsBockVienna LagerDoppelbockGerman PilsPre-Prohibition LagerSchwarzbierRauchbierDortmunder ExportMaibockMarzenAmerican Amber LagerEisbock+6 more
Common questions
- What is the L17 Harvest equivalent?
- Biergarten Lager, OYL-114 Bayern Lager, WLP860 Munich Helles Yeast, and 2352-PC Munich Lager II — the same strain from other labs, the Munich Helles / Augustiner (WLP860) strain.
- What is L17 Harvest's attenuation?
- 70–74% apparent attenuation.
- What temperature should I ferment L17 Harvest at?
- 10–16°C is the recommended range.
- What beer styles is L17 Harvest good for?
- Helles, Dunkels, Bock, Vienna Lager, Doppelbock, German Pils, Pre-Prohibition Lager, Schwarzbier, Rauchbier, Dortmunder Export, Maibock, Marzen, American Amber Lager, Eisbock, American Lager, Czech Pilsner, Czech Amber Lager, Czech Dark Lager, Mexican Lager, and Baltic Porter & Bière de Garde.
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