Stuck/Slow Fermentation?

Sat Mar 20, 2010 4:45 am

While I have made wine for many years, my son and I just tried our first batch of beer. We are making a Dunkelweizen from a kit. The fermentation was non existent 48 hours after pitching the yeast (dry, non re-hydrated, what was in the kit) so on the advice of guys at the store kit came from , we added a yeast activator/nutrient product and fermentation started.

After 3-4 more days in the primary, fermentation stopped and I prepared to rack to secondary. SG was 1.049 at beginning, 1.026 when fermentation stopped. I also made a point of tasting and although sweet and flat, no off tastes. Since I would have expected the fermentation to have gone further, and since the yeast had difficulty starting, I added more yeast before racking (Muntons dry standard ale yeast, re-hydrated).

Since it has been in the secondary, the fermentation is very slow, but still active, maybe a bubble every half hour. Also have been keeping carboy in a water bath and trying to hold temperature at 70F.

Will this make it to completion (1.015 or so?)? Any thing else I can or should do? Leave in carboy how long?

TIA

Dana
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Re: Stuck/Slow Fermentation?

Sat Mar 20, 2010 6:07 am

First of all, welcome to the beer side of fermentation!

First of all, for safety sake, make sure that this beer finishes out completely before you bottle in order to prevent bottle bombs.

A lag time of 48 hours is not unheard of especially without rehydrating the yeast. Dry yeast can be great, but with your next batch (which you should start now :D ), rehydrate that yeast in preboiled water at about 105 degrees. Leave it for about a half hour then pitch and aerate well. Also, use some of the yeast nutrient in the boil. These things will probably take care of the long lag time.

They should also take care of the potentially high starting gravity. I personally do not use a secondary fermentor for most all of my beers. I know that secondary is quite common with wine, but a lot of us on the beer side of things go with this philosophy. Pitch enough clean healthy yeast and allow the beer to sit in the fermentor for about 10 days for average gravity beers. This allows for the yeast to completely finish out and clean up any by products. Some with warn you of yeast autolysis, but in 100+ batches it has not been a problem for me. I have entered tons of beers in competition and never gotten autolysis back on a score sheet.

Kudos on having the good idea of the water bath for temperature control! Try to keep your ales in the 65-68 range on a consistent basis, and you will really like the beer you are making.

Stick with it!

Did through the archives, especially Jamil Shows and check out the next beer style you want to brew and go from there.

:bnarmy:
Sergeant: BN Army - Michigan Brewing Division

I've been pounding Chad's Dunkel all night.

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Mills
 
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Re: Stuck/Slow Fermentation?

Sun Apr 18, 2010 3:41 pm

Thanks for the tips and encouragement. We just opened the first 2 bottles out of this batch and it was excellent. I think I could get hooked on this.
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