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I use White Labs yeast, but I seem to recall that this is the Wyeast steam yeast, right? I used the WL version #810 San Fran lager to ferment a porter that's a few days out yet from being moved into a keg. It's a big beer--OG of 1.068, and it went all the way down to 1.014--so I definitely think it would work fine with a bock or something like that. Give it a shot--for me, without lagering capabilities, it's as close as I can get.