The fermentation range suggested for Safale S-04 is between 15-20РІВРЉ (59-68РІВРЏ) which is fairly for a lot of ale yeast.Р”Р„t this temperature, I personally have found thereРІР‚в„ўs low discernable ester production. In my experience, the attenuation from batch to batch using S-04 is very dependable. This may be slightly affected by factors such as mash temperatures and grist. S-04 AttenuationР”Р„t the recommended fermentation temperature of 20РІВРЉ, the attenuation of S-04 is between 72 РІР‚вЂњ 75%. I have seen countless threads in forums and questions asked here about whether the yeast is working properly when in reality it is doing exactly as intended. In just 2 or 3 of days of activity and the krausen (yeast head) at the height of fermentation will fall back into the beer. The speed if fermentation from S-04 can catch you off guard.

Typically this means cask beer can be served in a couple of days of delivery into the cellar. When cask beer is delivered to a pub the yeast gets roused back into suspension and the sooner it flocculates the better the beer clarity will be when served. When beer is packaged into a cask a certain amount of yeast goes into it. As mentioned above, Safale S-04 is perfectly suited to brewing cask ales because it ferments quickly and flocculates quickly.

Home brew cask ale