Optimus Primary
Liquid Ale yeast from Escarpment Labs.
Lab
Escarpment Labs· Ale · Liquid
Escarpment Labs· Ale · LiquidSpecs
Attenuation
80–87%
The share of sugars the yeast ferments out. Higher attenuation means a drier, stronger beer.
Optimal temp
20–27°C
68–81°F
The range where this strain ferments cleanly, without throwing off-flavors. Most brewers pitch near the low end.
Flocculation
Med-low
How readily the yeast clumps together and drops clear once fermentation winds down.
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.
Common questions
- What is Optimus Primary's attenuation?
- 80–87% apparent attenuation.
- What temperature should I ferment Optimus Primary at?
- 20–27°C is the recommended range.
- Does Optimus Primary produce phenolics (clove and spice)?
- Yes. Optimus Primary is POF-positive — it makes 4-vinyl-guaiacol, the clove and spice character of hefeweizens, witbiers, and saisons.
Brew with Optimus Primary
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