1099 Whitbread Ale
Liquid Ale yeast from Wyeast.
Lab
Wyeast· Ale · Liquid · 1099
Wyeast· Ale · Liquid · 1099Specs
Attenuation
68–72%
The share of sugars the yeast ferments out. Higher attenuation means a drier, stronger beer.
Optimal temp
18–24°C
64–75°F
The range where this strain ferments cleanly, without throwing off-flavors. Most brewers pitch near the low end.
Flocculation
Med-high
How readily the yeast clumps together and drops clear once fermentation winds down.
Alcohol tolerance
≈10% ABV
The rough ABV ceiling where the yeast stresses out and stops fermenting.
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
Potential substitutes for 1099 Whitbread Ale
Usually used in
Brown AleStoutEnglish IPABlonde Ale & Bitters
Common questions
- What is the 1099 Whitbread Ale equivalent?
- LalBrew Windsor, M15 Empire Ale Yeast, and OYL-007 British Ale II — the same strain from other labs, the Windsor (Whitbread B) strain.
- What is 1099 Whitbread Ale's attenuation?
- 68–72% apparent attenuation.
- What temperature should I ferment 1099 Whitbread Ale at?
- 18–24°C is the recommended range.
- What beer styles is 1099 Whitbread Ale good for?
- Brown Ale, Stout, English IPA, and Blonde Ale & Bitters.
- What can I substitute for 1099 Whitbread Ale?
- WLP017 Whitbread II Ale Yeast.
Brew with 1099 Whitbread Ale
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