Windy City wrote: ↑Tue Sep 29, 2020 10:56 am
I did not mention this in the original post but I did leave my mixer on during the entire ferment at a speed of 15 RPM.
Would like to mention a few things or thoughts on your post..
The continuous stirring of the wash, is really no different than using a stir plate for making a yeast starter.. I stir my wash / mash also but done manually and very slowly a few times during the fermentation.. I have found that when the SG reaches 1.000, it is really of benefit in allowing the ferment to finish cleaner.. and degassing once it finished dry helps in clearing..
Windy City wrote: ↑Tue Sep 29, 2020 10:56 am
I find it interesting that my PH is going back up. I will reduce the amount of chicken grit on my next try, but I really don't think this should be a problem.
On the Ph steadily raising, I would say that it is due to the ferment being stirred and that the acidic buffer used as the cause, as buffering is not required after the 24 hr period.. a wash acidic level, when stabilized at the 24 hr, will remain stable after that period and doesn't require buffering after that.. so you may want in the future to remove the buffering shell from the ferment.. I don't use oyster shells and prefer to use powder buffer for that reason..
I found that a Ph over 4.5 will cause more foaming during the stripping run, as there is always some foaming from unfermented sugars left in the ferment, especially if the ferment did not finish dry.. so I shot for a Ph of around 4 - 4.2 in stabilizing the ferment at the 24 hr period..
A stable fermenting temp in very important, as demonstrated by your setup, in shorten the fermentation period.. 85 - 86*F is the prefer range for any bread yeast, be active dry or instant, and SAF Red Label instant yeast is as good the Red Star, just a little more costly..
One difference from my list of ingredients, which your is very similar to my, is that I add Bentonite clay.. I have found that once the wash has finished fermenting, it assist greatly in helping to clear the wash especially if the wash is degassed.. a wash that finishes dry in 3 days will clear itself in another 3 days..
Overall I like your method and process of doing the wash..
Mars