The apparent attenuation of S-04 is typically between 74 and 82. This measurement indicates the degree to which the yeast consumes fermentable sugars during the brewing process. A higher attenuation percentage means that more sugars are converted into alcohol and carbon dioxide, resulting in a drier and more alcoholic beer.
I have personally used S-04 yeast in several of my homebrewing experiments, and I can attest to its impressive attenuation capabilities. One particular batch I brewed was a hop-forward American IPA, where I wanted a clean and crisp finish with a moderate level of residual sweetness. S-04 performed admirably, attenuating around 78%, which provided a good balance between hop bitterness and malt sweetness.
The fast sedimentation rate of S-04 is another characteristic that makes it a popular choice among brewers. After fermentation is complete, the yeast quickly settles to the bottom of the fermenter, making it easier to transfer the beer to secondary vessels or for packaging. This rapid sedimentation also helps clarify the beer, resulting in a clearer final product.
When using S-04 yeast, it is important to consider the pitching rate, which refers to the amount of yeast added to the wort per hectoliter (100 liters) of beer. The recommended pitching rate for S-04 is typically between 50 and 80 grams per hectoliter. Pitching an appropriate amount of yeast ensures a healthy fermentation and minimizes the risk of off-flavors or stuck fermentations.
In my experience, I have found that pitching towards the higher end of the recommended range (around 80 grams per hectoliter) with S-04 has yielded excellent results. The fermentation has been vigorous and complete, with no signs of sluggishness or off-flavors. However, it is worth noting that different beer styles may benefit from different pitching rates, so it is always a good idea to consult specific recipe guidelines or seek advice from experienced brewers.
S-04 yeast is known for its high apparent attenuation, fast sedimentation rate, and recommended pitching rates between 50 and 80 grams per hectoliter. These characteristics make it a versatile and reliable yeast option for a wide range of beer styles.