Wyeast | 1272 American Ale II | Beer Yeast | Activator Smack-Pack System™ | 100 Billion Cells

Wyeast | 1272 American Ale II | Beer Yeast | Activator Smack-Pack System™ | 100 Billion Cells

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  • 1272 is a reliable "house" strain for brewing American style beer with consistent performance
  • Provides a soft, clean profile with hints of nut, and a slightly tart finish
  • Activator Smack-Pack System™ "proofs" the yeast and shortens lag time when it hits your wort
  • When smacked, the Activator™ packet releases sugars and nutrients to initiate the culture's metabolism
  • Wyeast has been a pioneer in craft brewing for over 35 years and is committed to creating the finest fermentation products available
  • Although beneficial, cultures do not need to be activated prior to inoculation

With many of the best qualities that brewers look for when brewing American styles of beer, this strain’s performance is consistent and it makes great beer. This versatile strain is a very good choice for a “House” strain. Expect a soft, clean profile with hints of nut, and a slightly tart finish. Ferment at warmer temperatures to accentuate hop character with an increased fruitiness. Or, ferment cool for a clean, light citrus character. It attenuates well and is reliably flocculent, producing bright beer without filtration.

Attenuation: 72-76%
Flocculation: Medium High
Alcohol Tolerance: 10%
Optimum Fermentation Temp: 60-72°F
Cell Count: 100 Billion

American Amber Ale
American Brown Ale
American IPA
American Pale Ale
American Stout
Blonde Ale
Fruit Beer
Imperial IPA
Wood-Aged Beer

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 # WY1272
Shipping Eligible for Free Shipping Program
Availability California - Out Of Stock
Pennsylvania - In Stock
Weight 0.19 LBS
Community Q&A

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Browse 1 question Browse 1 question and 1 answer
Why did you choose this?
MoreFlavor Store
Specific Beer Style
Christopher O on Feb 3, 2023
Brewing a blonde!
Blake Umphress on Dec 28, 2022
Specific Beer Style
Christopher O on Feb 3, 2023
Shipping would take too long on a specific Belgian yeast, so I'm adjusting my recipe to be an American Ale.
Jordan K on Jan 15, 2023
Brewing a blonde!
Blake Umphress on Dec 28, 2022
good hazy yeast
Nicholas A on Nov 11, 2022
Making a Pale Ale and used it last time with good results
Robert A on Aug 11, 2022
an IPA
Jason W on Jun 11, 2022
Recipe called for it
Christopher O on Jun 9, 2022
Reliable. Performs great
Jimmy on May 5, 2022
Wyeast is my go to.
Russell W Parks on Nov 2, 2021
It's our standard yeast been using it for years!
David Jason W on Aug 18, 2021
Jeff R on Jun 25, 2021
strong american fermentation
Tim D on Feb 23, 2021
I like this style
Landon P on Feb 12, 2021
For an amber ale
WILLIAM Reynolds B on Jan 29, 2021
The recipe said to use this
Walter j on Nov 25, 2020
For a recipe.
Roy Westerberg on Oct 25, 2020
good stuff
Izzy S on Sep 15, 2020
Recipe recommended.
Joseph T on Jul 15, 2020
good results in the pass in spite of heavy bloating
James M. P on Jun 12, 2020
It works good for me
TED on May 30, 2020
J on May 8, 2020
rye pale ale
William C on Apr 29, 2020
Sour ale yeast
Kenny S on Apr 25, 2020
Brewing a citra pale ale.
Kyle Heon on Apr 16, 2020
It makes a good IPA
Karl T on Mar 27, 2020
I love stickers
Ryan C on Feb 19, 2020
Specified by recipe
James Bracken on Feb 1, 2020
Consistent Performing yeast
JUSTIN G on Jan 21, 2020
brewing an american style ale
Edward S on Dec 18, 2019
recommended for this beer
John L A on Dec 17, 2019
Use mostly Wyeast in my beers with great success
John G on Nov 21, 2019
For my all grain porter
JP B on Sep 11, 2019
for a pale ale
Jill T on Sep 4, 2019
CHARLES W S on May 9, 2019
I need it
Jeff Olson on Apr 25, 2019
Try something new
Kenneth M. B on Apr 16, 2019
called out for a Stout Recipe
Frank A on Mar 14, 2019
Making a double IPA
Martin G on Mar 4, 2019
Trying something new
Keith H on Mar 1, 2019
Trying it
Mathew B on Feb 25, 2019
Making an American Wheat Beer.
Kyle S W on Jan 19, 2019
favorite yeast
Robert Shanks on Jan 15, 2019
Brian D H on Jan 11, 2019
Mark B on Dec 4, 2018
to brew a citrusy pale ale
Jill T on Nov 30, 2018
kentucky common
David P on Nov 21, 2018
never used it before and wanted to see how it would work with the Citra Pale Ale.
John M on Sep 25, 2018
I need it
Jeff Olson on Sep 19, 2018
Haven't tried it, but like American Ale I.
George M on Jul 17, 2018
Used before
Luis I on Jun 12, 2018
Shipping would take too long on a specific Belgian yeast, so I'm adjusting my recipe to be an American Ale.
Jordan K on Jan 15, 2023
good hazy yeast
Nicholas A on Nov 11, 2022
How much do I need to order for a 3bbl system?
jeff on Nov 3, 2018
BEST ANSWER: Hello Jeff - I would recommend at least 6 to direct pitch in a 3bbl batch, this would also be dependent on OG Gravity. There is also the option of propagating your own yeast.

4.7 / 5.0
15 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Rated 5 out of 5
Still Fermenting
Beer is fermenting (week 2.5 since I pitched the yeast), May have not oxygenated the wort enough but the OG was around 1.082. Shes heavy. Yeast is rolling like a champ, no issues yet.
June 22, 2022
1 year ago
Rated 5 out of 5
Good fruity yeast
Great yeast fruity and slight tartness. I used it in the Galaxy Extra Pale and it is one of the best beer I have made. Definitely not as “clean” as Chico and the beer is a little hazy. So if you want a clean bright beer this is not the yeast for you. But if you want something slightly more fruity this is a great yeast.
September 21, 2021
over 3 years ago
Rated 5 out of 5
WY1272 American II Ale Yeast - Wyeast Great yeast for IPA’s
This is a fantastic yeast that always performs. Currently using it to ferment my version of “Mosaic Promise”.
User submitted image
Added Apr 20, 2021
April 20, 2021
over 2 years ago
Rated 5 out of 5
Wyeast American Ale.
activity started right on time!
January 2, 2021
over 3 years ago
Rated 5 out of 5
Fermented fast
Opened pack 3 days after receiving delivery in a ice pac. all melted but still quite cool and well insulated. I made a starter and let grow for 3 days at 70 degrees. Added it to my wort at 69 degrees and was fermenting the next morning. Mostly done after 5 days, I racked the dry hops and most of the yeast off the bottom of the 27 gallon conical fermenter and will keg in a few days. All pretty fast. Now I hope it tastes wonderful!
June 28, 2020
over 3 years ago
Rated 5 out of 5
Good stuff
Love this yeast works in a ton of styles so good choice for a house strain. Blow off tube recommended this stuff likes to climb out of the fermenter. Easy to top crop
April 1, 2020
over 5 years ago
Rated 2 out of 5
Not Impressed
Used this for the first time in two of my go-to APA recipes where I normally ferment with 1056 or WLP090. Based on the glowing reviews I confidently made twin 6 gal batches and followed my usual procedure (mash at 152F, 1.8L starter, pure O2 for 60 sec, pitch at 63F and ferment 21 days at 63-66F). Fermentation took off rapidly and the two batches finished at 1.012 and 1.010. But taste testing the post fermentation gravity samples made me uneasy about the excessive malt character and esters. The two brews were 32 and 40 IBU and dry hopped with Mosaic and Citra, but the desired hop profile was almost completely drowned out. Four weeks in the bottle did not improve the situation very much and I ended up with 12 gallons of overly complex, fruity APAs that, while drinkable, were nowhere as good as their 1056/W090 cousins.
I post this only to caution those who would do as I did and accept that 1272 is just a slightly maltier version of the Chico strain and can be used similarly. IMO it is much closer to an English yeast and requires serious adjustment to the grain bill and hopping schedule in order to use it in APA/IPA territory. Do what I should have done and test it first in some small batches. In the future I’ll use 1318 when I want properties like this and steer clear of 1272 for my American styles.
December 12, 2018
Response from MoreFlavor
Thank you so much for your feedback. We really appreciate the honesty and value great feedback like this as it helps us improve our products. Cheers!
December 13, 2018
Zach R Staff
Rated 3 out of 5
Stuck fermentation
I do not know what caused the problem. I can't blame the yeast.
March 29, 2018
over 5 years ago
Rated 5 out of 5
Finishes clear
Used this in Ugly Fish IPA with and a full pack of Safale-05 (started with a high OG, needed the extra cells). Best tasting brew I had ever produced. My friends thought I had something commercial on tap!
February 19, 2018
over 6 years ago
Rated 5 out of 5
Swelled quick, roughly 3 hours. love the slap packs
May 25, 2014