OYL-501 Gulo Ale
Liquid Ale yeast from Omega Yeast.
Lab
Omega Yeast· Ale · Liquid · OYL-501
Omega Yeast· Ale · Liquid · OYL-501Specs
Attenuation
85–90%
The share of sugars the yeast ferments out. Higher attenuation means a drier, stronger beer.
Optimal temp
20–25°C
68–77°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+
Finishes bone-dry
Carries the STA1 (diastaticus) gene, so it keeps eating sugars other yeast leave behind and finishes very dry. It's also a contamination risk: it can over-carbonate or gush if it crosses into other beers.
Usually used in
SaisonAlesIPABrut IPAStout & Bière de Garde
Common questions
- What is OYL-501 Gulo Ale's attenuation?
- 85–90% apparent attenuation.
- What temperature should I ferment OYL-501 Gulo Ale at?
- 20–25°C is the recommended range.
- Does OYL-501 Gulo Ale produce phenolics (clove and spice)?
- No. OYL-501 Gulo Ale is POF-negative (phenolically clean), so it won't throw clove or spice.
- Is OYL-501 Gulo Ale diastatic (STA-1)?
- Yes. OYL-501 Gulo Ale carries the STA1 gene (S. cerevisiae var. diastaticus). It super-attenuates to a dry finish, and can over-carbonate or gush if it cross-contaminates other beers.
- What beer styles is OYL-501 Gulo Ale good for?
- Saison, Ales, IPA, Brut IPA, and Stout & Bière de Garde.
Brew with OYL-501 Gulo Ale
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