I used this in a Classic Am pilsner, 2 packs pitched dry. it took several days to kick off and when it did wes very slow to ferment. It’s bee 2 weeks now and still pretty sluggish. Would it be safe to use the slurry on another batch? Temp ahs been steady at 50*F.
I’d raise the temp. S23 seems to work better at higher than normal lager temps.
If the beer you’re fermenting now tastes good then I think it’s ok to repitch. I’m sure there are cases where this isn’t true, but, when pitching second generation I think it’s a good rule of thumb.