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dgez

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Feb 25, 2008
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OK, Here's the situation. Over the last 4 months I have had two batches of beer never start fermentation after 48 hours. One was an ale, this last one was my first lager. I think I may be under pitching, but I'm not sure.

The first batch that went wrong was last November. It was an english bitter that I was planning on haveing ready by Christmas, OG was about 1.040. It was an all extract brew. I used a White Labs liquid yeast, I want to say the London Ale. The expiration date on the yeast was like 3 months away. I took the yeast out of the fridge a few hours before to get it to room temp. When I shook it, the yeast easily broke away form the bottom of the vile without any effort...usually I have to shake vigorously for a few minutes to break all the clumps away from the bottom. I had never brewed with this yeast before so I was not sure how it acted. I brewed as normal, I cooled the wort to about 72, transfered to the carboy, aerated by swirling the carboy for a few minutes, pitched the yeast, aerated some more. Put it down in the basement where it was about 65 degrees. A little low, but temp should not be an issue. After 48 hours no sign of life, it looked as if I never pitched anything. I dumped it down the drain as I was holding back tears...

After that I swore to use only the Wyeast slap packs. This last batch, which was a lager, the same thing happened. I used Wyeast 2007 Pilsen Lager. I am not sure of the expiration, I did nto look. I asked the guy at the homebrew store what a good pilsner yeast would be and thats what he gave me...totally slipped my mind. I activated the slap pack on the way home becuase I was brewing later that day. Anyway, I did a partial mash on this one. OG 1.063. Cooled wort to 72 degrees. I noticed that 5 hours after activating the smack pack, the bag was barely bulging. Usually the bags look like that are goning to burst after 5 hours. But never using this yeast before, let alone a lager yeast, I didn't know what to expect. I aerated the wort, pitched aerated again. This is where I may have made a mistake. This time I put the wort directly into a fridge that was at 48 degrees (The warmest I can get it). The next morning (16 hours later) nothing. The fridge had cooled to about 42. So I pulled it out of the fridge and let it sit in the basement which was at 62 to let it warm up. After 24 hours, I shook it up to hopefully arouse the yeast. This morning I checked and nothing. So when I get home today, I will be dumping it down the drain, again holding back tears.

The only thing I can think of is that I am getting weak yeast and I need to make a starter a few days before. If anybody has any other ideas why this is happening, Im all ears. I cannot deal with the emotional trauma of dumping a batch down the drain.
 
STOP DUMPING YOUR BEER AFTER 48 HOURS
Don't even break a sweat before 72 hours. How do you know you get no activity? No krausen forming or no bubbles? Please don't say you've dumped 2 batches because of no airlock activity. Worst case scenario your yeast is dead, JUST RE-PITCH with healthy yeast.
I don't know the specifics of the smack pack you used since you don't know what yeast it was but I'd say follow the temps on the pack. For the smaller vial on the other batch I'm pretty sure those require Starters. I don't think there's enough yeast in them without a starter to handle a 5G batch. I could be wrong but I don't think I am.
Even if you notice nothing, wait a week and take a hydro reading. Fermentation can happen very quickly when you're not looking and NEVER gauge fermentation by airlock activity. A small leak around your bucket lid or bung would allow the CO2 to vent before it got to the airlock thus causing no activity when there really is fermentation.
 
DONT DUMP IT! Run to your LHBS and get yourself another slap pack of the same yeast. Slap it, and make a starter by boiling about 1000ml of water with a cup of DME for about 5 mins to sanitize. Cool the starter to about 70 to 75 and pitch the yeast and let it sit for about 24 to 48 hrs to get the yeast a good start. Aerate the starter then pitch. If your sanitation is good there is no need to dump your brew!
 
OH MY GOD!!!!!

First as everyone has said...Never dump your beer!!!

Second, you didn't happen to notice THIS thread did you??? https://www.homebrewtalk.com/f39/fermentation-can-take-24-72-hrs-show-visible-signs-43635/ did you?????

Thirdly if you are using an Airlock as a fermentation gauge..DON'T!!! It is not an accurate instrument...It is a VENT...Your Hydrometer is the "Accurate instrument" to measure fermentation...Read this...

https://www.homebrewtalk.com/1156967-post6.html


So that the biggest thing you are doing wrong, is dumping your beer without waiting a week or so...

Read this too.. https://www.homebrewtalk.com/f39/ne...virtue-time-heals-all-things-even-beer-73254/

I've pitched 6 month out of date yeast and had beer ferment......somethings take time and patience.
 
I was planning on doing what travisthebrewaddict suggests. I will get another pack of yeast, make a starter with it and pitch it tomorrow if there is still no activity. I am using a glass carboy so I can tell that there is no activity. Currently, its been about 40 hours since I've pitched.
 
Two things stand out, besides the most egregious sin of dumping beer ;). I suspect both batches would have finished just fine if you hadn't watered your lawn with them, but what's done is done.

(1) Since you were unsure of the viability of your liquid yeast, you should have used a starter. At the absolute peak of freshness, Wyeast XL smackpacks contain 100 billion cells; White Labs have slightly less, though the specific number escapes me at this point. In fact, always make a starter with liquid yeast and grow the colony to sufficient numbers to properly ferment your wort.

(2) Lagers require MUCH larger starters than ales- the lower fermentation temps mean they work slower and need many many more cells to do the job properly. If you haven't already done so, consult the pitching rate calculator on Mr. Malty to understand the correlation between OG and pitching rate.

As a side-note, having a few sachets of dry yeast on hand is always a good idea.

Jason
 
If your so worried about having your fermintation start before 48 hours, pitch to vials/packs of yeast. If you dont want to fork over the money for an extra pack, make a starter 24-48 hours prior to brewing. If I make a starter, my airlock is usually going crazy within 1-3 hours. :mug:
 
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