evchenko
Well-Known Member
I'm doing an IPA this weekend with Jester 2015 hops...
Well, I was planning on brewing a Munich Helles this weekend...
Also, the high here forecast for Saturday is -6° F, so postponing the brew day isn't necessarily a bad thing.
Well, I was planning on brewing a Munich Helles this weekend, but when I received the ingredients in the mail from my preferred supplier, I noticed that the yeast (Wyeast Munich Lager 2308) was packaged on August 27, 2015. According to a couple of different calculators, it has a viability of somewhere between 10 - 25%. Nevertheless, I made a 5L starter last night and put it on the stir plate. This morning, not many signs of life. If it's showing activity (in the form of CO2 bubbles) by the time I get home today, I'll let it finish out, then crash it and feed it another 5L. Otherwise, I'll have to come up with another plan.
Well, crap.
I came home last night, and after 2 days on the stir plate, there was no significant activity in the starter. To be sure, I took a gravity sample: 1.041. So the yeast is dead. I turned off the stir plate and left the flask to be dumped and cleaned when I had a little more time.
I checked it this morning and it's fizzing like it's carbonated. This is *without* the stir plate being on. So it's definitely fermenting. My question is, is this going to be healthy yeast, or will they have been stressed from pitching so few viable cells into such a big (5L) starter? I'll leave them alone to finish, then taste a sample of the starter wort, I guess.
Still not sure if I should use this yeast or not.
What size batches are you brewing that you're doing 5L starters?
I'm brewing my first stout tonight. 1 gallon all grain. Then on to an IPA!