Hey! I had 2 PF-Tek cakes develop pins in the jar at the same time. I birthed one (damaged it a bit on the way out of the jar), and left one in the jar to fruit (I left it in because I damaged the first one, lol). The cake I'm doing in-vitro is the one from my thread "help a newbie, do these mushrooms look healthy". It's fruiting quite well now!
Here's the other cake. I'm not sure if the discoloration is mold, stress, or something else. Any ideas? It hasn't pinned at all since birth, which was over a week ago, despite the fact that it started to pin before I birthed it.
Thanks for the help guys!