Originally Posted by Pogopunx82
So I was doing my thing making a Berliner Weisse and I had two vials of WL Berliner Weisse Blend. One new one and one that I had found in my fridge that had gotten lost. I accidentally pitched the old one that expired last may. What do you think is going to happen?
You want some funky esters in that beer anyways, which is the primary effect of under pitching (or pitching old yeast), you might have a slow start but your beer will be fine.