I've been planning a kolsch for my next brewday, so today I pulled out my jar of slurry. I thought I had harvested it in March of 2013, and I've revived yeast that old before.
Well, just after I pitched the slurry into my new starter, I looked again and it was harvested in March 2012.
So what are my chances of reviving anything viable? On one hand, I feel like I might as well just dump it right now. On the other hand, it's already pitched and on the stirplate.
I guess the worst case scenario would be to buy a fresh smack pack, which isn't a big deal at all. Hmmm... what would you do? Give it a few days and watch for some activity? Even if something does start up, I don't know how much I'd trust it.