WLP099 High Gravity Ale - White Labs Yeast

WLP099 High Gravity Ale - White Labs Yeast

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What was a Seasonal Strain is now a permanent strain at MoreBeer due to a very positive overall response. This yeast can supposedly ferment up to 25% alcohol. We have not had the opportunity to test it anywhere near that type of alcohol. We welcome feedback from customers. Produces ester character that increases with increasing gravity. Malt character dominates at lower gravities. After using this yeast strain we found out that it can sometimes produce a Belgian Character and sometimes not. Try this yeast with your big Belgians as well as other unique hybrids and you will find yourself pleasantly surprised. We would not recommend it for creating classic true-to-style variations of Barleywines, Imperial Stouts, Strong Ales or any other high-gravity style where Belgian flavors would not be appropriate. This yeast might be a great fit for really big Dunkelweizens.

To find out how to ferment to 20-25% visit www.whitelabs.com

Also note that with any beer with a starting gravity over 1.060 you should consider using nutrients. A recommended nutrient schedule is to add Servomyces to the kettle at the end of the boil, and then follow that with a 6 grams per 5 gallons addition of Fermaid K half-way through the fermentation.

Attenuation: 80%
Flocculation: Medium
Fermentation Temperature: 65-69F


For best results we always recommend ordering an ice pack with your liquid yeast.

Please Note: When choosing an ice pack option beware that the liquid yeast will not arrive cold even when shipped together. Ice packs and insulated mailing options are designed to keep the yeast colder for longer during shipment, but they will not ensure that your yeast arrives cold. We will not replace liquid yeast that arrives warm. During warmer months we strongly recommend you choose dry yeast.


Item # WLP099
Shipping Eligible for Free Shipping Program
Availability California - Out Of Stock
Pennsylvania - In Stock
Weight 0.14 LBS
Community Q&A

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Browse 2 questions Browse 2 questions and 50 answers
Why did you choose this?
MoreFlavor Store
specialty ale
Thomas W on Sep 28, 2022
Need it for high gravity beer
MIchael M on May 11, 2022
specialty ale
Thomas W on Sep 28, 2022
I’m brewing a beer that needs this yeast
Ryan W on Jun 29, 2022
Need it for high gravity beer
MIchael M on May 11, 2022
I need a yeast with more power to reduce excess sweetness from beer stuck at 9% ABV
Christopher J C on Apr 13, 2022
Need to finish a mead to dry because original yeast maxed out on alcohol tolerance at 18%
Camron J on Mar 15, 2022
william w on Dec 27, 2021
Experimenting with turning my Belgien triple into a braggot
Christopher N B on Jul 22, 2021
High gravity mead
EVAN W on May 22, 2021
making a 15% beer
Daniel P B on May 4, 2021
High gravity beers
David Baker on Mar 30, 2021
Got a 120 Min IPA recipe that needs it
Cory M. S on Feb 8, 2021
Fermenting high alcohol beer
Brian W on Feb 1, 2021
To make a beer with gravity over 20%
Francis D on Dec 24, 2020
making high alcohol hard cider
Mike G on Dec 8, 2020
I like high gravity beer.
Daniel Blakemore on Dec 5, 2020
Good reviews and matches needs
Nigel M on Nov 18, 2020
Valued C on Oct 31, 2020
To be prepared!
Richard H on Oct 30, 2020
Naomi R on Oct 9, 2020
Gotta get a holiday beer up to snuff for holiday cheer
Trevor M J on Aug 20, 2020
Trying to fix a stuck ferment on a high gravity beer
Matt B on Jul 28, 2020
No other ale yeast can ferment this high.
Jeff Ong on Jun 24, 2020
Because it is an specified ingredient for a clone brew.
Geoffrey N on May 9, 2020
potential high abv of finished mead
dan s on Mar 26, 2020
Like it
Michael M on Mar 26, 2020
It is one of few strains that can brew at high abv
Parker L L on Mar 11, 2020
Used it before
Brian R on Oct 18, 2019
for high gravity
Mario O on Aug 28, 2019
Clone Recipe
Mark J on Mar 5, 2019
Have used it before to make high gravity stout.
Kevin G on Feb 18, 2019
For a very high gravity stout.
Brian Gorney on Feb 15, 2019
High gravity beer
Tim W on Feb 1, 2019
High ABV
Michael Q on Jan 23, 2019
used it before, worked great for hard apple cider.
james g on Nov 24, 2018
Midas Touch
Mike L on Nov 17, 2018
Brewing 12% ABV Beer
Gary B on Oct 31, 2018
Use in big beer
John Mansu on Oct 24, 2018
High alcohol tolerance
Philip H on Sep 12, 2018
Want to try to brew a high ABV beer.
Garry M on Feb 20, 2018
Big beers
chris Phillips on Feb 16, 2018
super clean and works great
Paul G on Feb 15, 2018
Used for apple cidre making
Michael A on Jan 30, 2018
Making high gravity beer
Valued C on Jan 29, 2018
Local home brew store didn't have it in stock, and Imma do a big beer.
John M on Jan 27, 2018
Need help getting old ale down a few more gravity points
Phillip Johnston on Jan 22, 2018
I’m brewing a beer that needs this yeast
Ryan W on Jun 29, 2022
I need a yeast with more power to reduce excess sweetness from beer stuck at 9% ABV
Christopher J C on Apr 13, 2022
I have a RIS, final gravity should be around 1.03 to 1.04. I originally used Wyeast 1084 starter with 2 packs of US-04. OG 1.135. I'm stuck at 1.051, even after adding champagne yeast EC-1118. It didn't drop any points with that. It's been 2 weeks primary and gravity hasn't dropped in 1.5 weeks. Do you think the WLP099 will help at this point? Thanks in advance
Antonio Logan on Aug 14, 2018
BEST ANSWER: I was pretty impressed with how far down this yeast went the first time I used it, but with that said, I have also gotten significantly lower final gravity results with two of the three yeast strains you mention, so I would conclude that your yeast's alcohol tolerance is not the issue. I'd advise you to take a look at temperature and oxygenation, regulating temperature at a nice warm level and agitating it might be all it needs. I would try that before spending more money on yeast. Hope this is some help, and good luck with your brew!

4.3 / 5.0
15 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Rated 3 out of 5
Not so sure
I have used this yeast twice, the first time with a batch that started at 1.138 and it did eventually go down as low as 1.012, which was awesome, and there were not many ester notes despite the high abv, though it still had a sweet tang that i'm not sure what could've been done to prevent. The second use was an attempt to unstick a fermentation of a batch that was 1.078OG and was 1.050 after a month. pitched this with nutrient, but noticed no increase in the slowness of the bubbling. If you're ok with a long ferment, this could be the yeast you need for high abv, but i'm going to go back to pushing the gravity limits on more common strains.
November 26, 2021
1 year ago
Rated 4 out of 5
Workhorse Fermenter, but stalled at 19%
Was able to ferment a large ale, but not quite the 25% advertised despite oxygen and nutrient additions and staggered sugar schedule.
December 12, 2020
over 2 years ago
Rated 5 out of 5
It's a great yeast but I would recommend a yeast starter with it to get it's full potential an air raid a lot.
May 16, 2020
over 2 years ago
Rated 5 out of 5
Fermented over 90% first try
Pretty great yeast to dry out a beer. I like the taste.
Took a 1.063 to 1.005 on first dry without anything special. Awesome.
June 13, 2018
over 4 years ago
Rated 5 out of 5
Powerful Beast Escaped from its Cage
This is one powerful beast. I've used it three times now, and each time I've gotten at least 85% attenuation within three days. It's led me to be super-careful about mash temperatures, because this monster will eat every last drop of fermentable sugar, leaving you with a bone-dry brew if you're not careful. It also has a wonderful flavor if you can get the temperature right: at < 70F, it imparts very little flavor; < 75F it can impart tart apple or pear flavors; > 75F it imparts vanilla/bubblegum flavors (delicious, IMO).

My advice: pitch this yeast into fresh wort, and run as fast as you can in the other direction before it gets you, too!
January 20, 2016
Rated 5 out of 5
Powerful yeast
I designed a Belgian Tripel recipe that would ferment out to about 9.3% ABV. The Belgian yeast vial I had (WLP 530) was a few days past its prime but was plenty viable. I decided to add a half vial of WLP 099 to it just to be sure all the sugar fermented out.

The combination of the two yeasts exceeded my wildest expectations. They fermented well past my estimated final gravity and brought the beer to 11% ABV. The fermentation was amazingly vigorous (though I did use yeast nutrient and dissolved pure oxygen into it, so the yeast probably had optimal growing conditions).

The finished beer was delicious, with no off flavors, and packs quite a punch at that ABV level. I wouldn't hesitate to use that combination of yeasts again.
October 11, 2015
Rated 5 out of 5
Must have for high gravity
Used with a Bourbon County RIS clone. Couldn't have achieved 12%ABV without it. Highly recommended.
May 28, 2015
Rated 4 out of 5
Hit Our Target ABV
We were looking to get a higher ABV on our Belgian Strong. Achieved a little over our goal with 15.1%. Would love to try again to push the boundaries a little
May 28, 2015
Rated 4 out of 5
great yeast
my go to yeast for anything 1.090 and up, works super fast, even eith poor aeration. one of a kind yeast that can handle any barley wine or super strong beer you may brew.
May 27, 2015
Rated 5 out of 5
Worked great in a 20% abv barley wine
I used this yeast in a 3L starter to make a barley wine with multiple dextrose additions during fermentation in the spirit of Dogfishhead 120 min IPA. It kept chugging all the way to the end and approaching 20% ABV. I fermented between 64 and 68F and really enjoyed the fruitiness imparted by the yeast. The beer is still conditioning in secondary but I'm really happy with how this yeast handled the primary fermentation and will definitely use it again.
May 5, 2015