W15 Suburban Brett
Liquid Brett yeast from Imperial Yeast.
Lab
Imperial Yeast· Brett · Liquid · W15
Imperial Yeast· Brett · Liquid · W15Specs
Attenuation
75–80%
The share of sugars the yeast ferments out. Higher attenuation means a drier, stronger beer.
Optimal temp
18–23°C
64–73°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−
Not diastatic
Does not carry the STA1 (diastaticus) gene. It attenuates normally, with no diastaticus over-attenuation or gushing risk.
Usually used in
Brett BeerFlanders Red AleLambicGueuzeOud Bruin & Old Ale
Common questions
- What is W15 Suburban Brett's attenuation?
- 75–80% apparent attenuation.
- What temperature should I ferment W15 Suburban Brett at?
- 18–23°C is the recommended range.
- Does W15 Suburban Brett produce phenolics (clove and spice)?
- Yes. W15 Suburban Brett is POF-positive — it makes 4-vinyl-guaiacol, the clove and spice character of hefeweizens, witbiers, and saisons.
- Is W15 Suburban Brett diastatic (STA-1)?
- No. W15 Suburban Brett does not carry the STA1 gene, so it attenuates normally with no diastaticus gushing risk.
- What beer styles is W15 Suburban Brett good for?
- Brett Beer, Flanders Red Ale, Lambic, Gueuze, and Oud Bruin & Old Ale.
Brew with W15 Suburban Brett
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