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Wyeast 1272 American Ale II


Wyeast Laboratories

What it does :

The Wyeast 1272 American Ale II yeast strain produces a slightly nutty but otherwise clean flavor profile. Fermentation at higher temperatues will increase fruity esters and will better showcase the hop flavors In contrast, fermentation at lower temperatures will result in a clean flavor profile with a light note of citrus. This strain is a flocculent yeast that results in a clear beer. This yeast strain is moderately attenuative. You can expect it to ferment 72 to 76 percent of the fermentable sugars in your wort. It results in a slightly tart finish.

What it is:

This is a top-fermenting yeast strain. This yeast strain provides consistent fermentation performance, and is well-suited to brewing a variety of North American ale styles.

Vital Statistics

Attenuation (%):

72 - 76

Fermentation Temperature (F):

60 - 72



Product Form:


How it works:

After the boil is complete, cool your wort temperature down to be at or near 72 F (22.2 C). Then, you can add this yeast to begin the primary fermentation of your beer.


The amount of pitching yeast that you need to properly ferment a 5 gallon (18.9 liter) batch of wort will vary with the original gravity of your recipe. The higher the orginal gravity target of your wort, the greater the amount of sugars to be fermented. So, the original gravity of your recipe's wort drives the number of yeast cells you need to ferment these sugars. Making a yeast starter is strongly recommended for a wort with an original gravity at or above 1.080. For this Wyeast Laboratories product, simply follow their instructions on the package to prepare the yeast for pitching. Their built-in starter packaging ensures that you have enough yeast cells for pitching into your wort.


You should prepare your yeast sample for pitching into the wort. A liquid yeast slurry typically requires that you begin activating the culture several hours before use. Follow typical brewing sanitation practices to ensure your fermentation produces the expected results. Unwanted bacterial contamination at the fermentation stage will undo all your hard work in getting your brew to this step of the process.

Related Links

Final Gravity Prediction
Wyeast 1272 American Ale II