BREWING.IT/ yeast

OYL-027 Belgian Saison I

Liquid Ale yeast from Omega Yeast.

LabOmega Yeast· Ale · Liquid · OYL-027

Specs

Attenuation
76–80%
The share of sugars the yeast ferments out. Higher attenuation means a drier, stronger beer.
Optimal temp
21–35°C
70–95°F
The range where this strain ferments cleanly, without throwing off-flavors. Most brewers pitch near the low end.
Flocculation
Low
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+
Clove & spice
Throws phenolics — the clove and spice notes (4-vinyl-guaiacol) behind hefeweizens, witbiers, and saisons. Expect a spicy character, not a clean one.
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.

Same strain, other labs

Dupont (Saison, WLP565)
OYL-027 = WLP565 = 3724

Potential substitutes for OYL-027 Belgian Saison I

Usually used in

Ales

Common questions

What is the OYL-027 Belgian Saison I equivalent?
WLP565 Belgian Saison I Ale Yeast and 3724 Belgian Saison — the same strain from other labs, the Dupont (Saison, WLP565) strain.
What is OYL-027 Belgian Saison I's attenuation?
76–80% apparent attenuation.
What temperature should I ferment OYL-027 Belgian Saison I at?
21–35°C is the recommended range.
Does OYL-027 Belgian Saison I produce phenolics (clove and spice)?
Yes. OYL-027 Belgian Saison I is POF-positive — it makes 4-vinyl-guaiacol, the clove and spice character of hefeweizens, witbiers, and saisons.
Is OYL-027 Belgian Saison I diastatic (STA-1)?
Yes. OYL-027 Belgian Saison I 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-027 Belgian Saison I good for?
Ales.
What can I substitute for OYL-027 Belgian Saison I?
SafAle T-58.
Brew with OYL-027 Belgian Saison I
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