A05 Voyager
Liquid Ale yeast from Imperial Yeast.
Lab
Imperial Yeast· Ale · Liquid · A05
Imperial Yeast· Ale · Liquid · A05Specs
Attenuation
68–72%
The share of sugars the yeast ferments out. Higher attenuation means a drier, stronger beer.
Optimal temp
18–22°C
64–72°F
The range where this strain ferments cleanly, without throwing off-flavors. Most brewers pitch near the low end.
Flocculation
High
How readily the yeast clumps together and drops clear once fermentation winds down.
Genetic traits
Phenolics
POF−
Ferments clean
Phenolically clean (POF-negative). No clove or spice, so malt, esters, and hops come through unmasked. The norm for American and British ales and most lagers.
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
Common questions
- What is the A05 Voyager equivalent?
- OYL-014 British Ale VII, WLP022 Essex Ale Yeast, and 1469 West Yorkshire Ale — the same strain from other labs, the West Yorkshire / Timothy Taylor (1469) strain.
- What is A05 Voyager's attenuation?
- 68–72% apparent attenuation.
- What temperature should I ferment A05 Voyager at?
- 18–22°C is the recommended range.
Brew with A05 Voyager
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