B48 Triple Double
Liquid Ale yeast from Imperial Yeast.
Lab
Imperial Yeast· Ale · Liquid · B48
Imperial Yeast· Ale · Liquid · B48Specs
Attenuation
74–78%
The share of sugars the yeast ferments out. Higher attenuation means a drier, stronger beer.
Optimal temp
18–25°C
64–77°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+
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.
Same strain, other labs
Usually used in
Belgian TripelBelgian Golden Strong AleBelgian DubbelBelgian QuadTrappist SingleBelgian Dark Strong AleBlonde Ale & Belgian Pale Ale
Common questions
- What is the B48 Triple Double equivalent?
- OYL-028 Belgian Ale W, WLP530 Abbey Ale Yeast, and 3787 Trappist High Gravity — the same strain from other labs, the Westmalle (WLP530) strain.
- What is B48 Triple Double's attenuation?
- 74–78% apparent attenuation.
- What temperature should I ferment B48 Triple Double at?
- 18–25°C is the recommended range.
- Does B48 Triple Double produce phenolics (clove and spice)?
- Yes. B48 Triple Double is POF-positive — it makes 4-vinyl-guaiacol, the clove and spice character of hefeweizens, witbiers, and saisons.
- What beer styles is B48 Triple Double good for?
- Belgian Tripel, Belgian Golden Strong Ale, Belgian Dubbel, Belgian Quad, Trappist Single, Belgian Dark Strong Ale, and Blonde Ale & Belgian Pale Ale.
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