Hi Everyone. I did a Doppelbock 12 days ago. Pitched a packet of BrewFerm. Fermentation got off well, and I even did a 2-day D-rest last week at the mid 60's F. Well, it's been back to a 50F temp now for a while, and the SG is at 1.040, down from OG 1.086. Target FG is around 1.024. No airlock activity, and I'm thinkking I should have used 2 packs, but wanted to try the yeast, and only had one. Now I'm considering repitching with some WLP-833, which I have to work up from a slant. (I realize I did the D-rest too soon, but instead of going by a gravity read, I simply waitied for the bubbling to slow significantly down. SG at start of D-rest was 1.042, so I think the yeast pooped out.)
Now, if I do add some fresh lager yeast, what size starter would be advised for this 3-gal batch? And should I reoxygenate the batch, or just add the yeast? (I always use an O2 tank and diffusion stone.)
Thanks for any advice. It will be a few days before a starter is ready in any case.
John S.
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