As many of you know, I brew a lot of lagers, but this one has befuddled me.
Been running 835 German Lager X currently. Previous 2 pitches (dortmunder and pilsner) were extremely healthy, fast (<8 days) and flocculent, and sampling has been so great that I am hoping that 835 is made a year round.
Third pitch into an Oktoberfest (600ml Slurry/27 days since previous pitch so calced as 2 weeks 'old', 12 gal 1.058 wort) 2 minutes pure O2. 72 hours in nothing. at 84 hours, I gave in and pitched another 200mL. at 96 hours started to see airlock movement and krausen development. it is now pounding away, dropping about 1 plato per day.
I'm not sure what I've done wrong here. I'm extremely pissed as the brewday went otherwise perfectly. I am already tentatively scheduling a rebrew in late June or early July, growing some 835 from the 1st fermentation that I saved, in anticipation that this one being completely FUBAR.
Any thoughts or suggestions?
The easiest fixer upper is to blow CO2 to the cone of fermentor to put yeast back into suspension.
Now I think there are couple of things about repitching. It takes me up to 6 generations till my new pitch become to be super yeast.
Yeast will consume oxygen is short period of time. I airate wort after HX before it enters the fermentor. It is quite important to airate/oxygenate wort when you repitch. It takes me 3 batches to fill fermentor and they are about 4 hours apart. Each batch is airated.
Last thing is do not ferment too cold. I start at 52F and go up every day.
Now translate it to your system and it should work quite nice. Let me know if you have any questions.
Hoppy brewing and come to visit me one day.