I started a Barleywine on 7/7 using the yeast cake of WLP007 from a pale ale. The OG was 1.103 and I was hoping using slightly elevated temperatures (66*F), a long low mash, good aeration, and the good pitch rate I would be able to get up to 80% attentuation.
Welp, looks like the yeast did not cooperate and my final gravity is about 1.025. While this is still within the style guidelines, I do like my beers drier and the sample is noticeably sweet (not unpleasantly though).
To dry this beer out some more, should I go ahead and pitch a 2 liter starter of WLP099 and let it ride for a few more weeks? (I would rack it off of the current cake though). Would the lack of oxygen be an issue for the yeast, maybe the shock of being added to a beer that is already over 10%?
My plan is to split it and pitch brett C into one half and leave the other half alone. I can't find solid numbers on its alcohol tolerance, but it seems like 12% is the most used number. Unless the WLP099 tears all the way through it the brett should be fine, and I would probably pitch them together.
Anyone see any issues with this idea?