WLP4022 Wallonian Farmhouse II Ale Yeast
Liquid Ale yeast from White Labs.
Lab
White Labs· Ale · Liquid · WLP4022
White Labs· Ale · Liquid · WLP4022Specs
Attenuation
80–82%
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.
Alcohol tolerance
≈15% 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−
Not diastatic
Does not carry the STA1 (diastaticus) gene. It attenuates normally, with no diastaticus over-attenuation or gushing risk.
Common questions
- What is WLP4022 Wallonian Farmhouse II Ale Yeast's attenuation?
- 80–82% apparent attenuation.
- What temperature should I ferment WLP4022 Wallonian Farmhouse II Ale Yeast at?
- 20–27°C is the recommended range.
- Does WLP4022 Wallonian Farmhouse II Ale Yeast produce phenolics (clove and spice)?
- Yes. WLP4022 Wallonian Farmhouse II Ale Yeast is POF-positive — it makes 4-vinyl-guaiacol, the clove and spice character of hefeweizens, witbiers, and saisons.
- Is WLP4022 Wallonian Farmhouse II Ale Yeast diastatic (STA-1)?
- No. WLP4022 Wallonian Farmhouse II Ale Yeast does not carry the STA1 gene, so it attenuates normally with no diastaticus gushing risk.
Brew with WLP4022 Wallonian Farmhouse II Ale Yeast
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