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General Category => Yeast and Fermentation => Topic started by: bierview on May 19, 2016, 08:25:36 PM

Title: US-05
Post by: bierview on May 19, 2016, 08:25:36 PM
I really don't use dry yeast all that much.  This year I did.  I made four batches with US-05 and every single one was over carbonated.  When I noticed this on the first batch I reduced my priming sugar from 3 oz. of cane sugar to 2 oz. and still over carbonated.  No sign of infection on the neck of the bottle or off taste.  Is this typical with this strain.  I cracked the caps on all the bottles and now they seem fine.

This sound familiar to anyone?

BV
Title: Re: US-05
Post by: denny on May 19, 2016, 08:33:46 PM
Nope, I don't think that's anything you can attribute to that yeast.
Title: Re: US-05
Post by: dilluh98 on May 19, 2016, 08:42:08 PM
I really don't use dry yeast all that much.  This year I did.  I made four batches with US-05 and every single one was over carbonated.  When I noticed this on the first batch I reduced my priming sugar from 3 oz. of cane sugar to 2 oz. and still over carbonated.  No sign of infection on the neck of the bottle or off taste.  Is this typical with this strain.  I cracked the caps on all the bottles and now they seem fine.

This sound familiar to anyone?

BV

First thought: are you certain you are at terminal gravity when you bottle, i.e., same FG 2-3 days apart?
Title: Re: US-05
Post by: bierview on May 19, 2016, 09:02:42 PM
I really don't use dry yeast all that much.  This year I did.  I made four batches with US-05 and every single one was over carbonated.  When I noticed this on the first batch I reduced my priming sugar from 3 oz. of cane sugar to 2 oz. and still over carbonated.  No sign of infection on the neck of the bottle or off taste.  Is this typical with this strain.  I cracked the caps on all the bottles and now they seem fine.

This sound familiar to anyone?

BV

First thought: are you certain you are at terminal gravity when you bottle, i.e., same FG 2-3 days apart?

Of course that was my first thought.
OG: 1.044  FG:1.008   14 day primary  29 day condition
OG: 1.063  FG:1.012   9 day primary   22 day condition
OG: 1.058  FG:1.010   12 day primary  31 day condition
OG: 1.058  FG:1.012   9 day primary  35 day condition
Title: Re: US-05
Post by: dilluh98 on May 19, 2016, 09:57:17 PM
It looks like the longer you primary, the lower your FG. I wouldn't expect US-05 to go super dry. I'm wondering if there isn't infection at play here pre-bottling?
Title: Re: US-05
Post by: HoosierBrew on May 19, 2016, 10:10:32 PM
FWIW, I use a long primary for most beers and 1.009-1.012 FG is pretty standard for me using 1056/S-05, depending on what I'm brewing.


Edit - 1056/S-05 are pretty dry strains IMO. I like well attenuated beers normally, and have to intervene with grist to finish much above the listed. Obviously stouts and others with higher amounts of unfermentables are a different story.
Title: Re: US-05
Post by: bierview on May 20, 2016, 11:20:19 AM
It looks like the longer you primary, the lower your FG. I wouldn't expect US-05 to go super dry. I'm wondering if there isn't infection at play here pre-bottling?

If there were an infection wouldn't I see some evidence on the collar of the bottles?  Also, the carbonation would continue even after I cracked the caps to release some of the pressure. It doesn't.
Title: Re: US-05
Post by: Stevie on May 20, 2016, 01:44:28 PM
Only four possible answers. Not finished fermenting, infected, busted scale, priming sugar not well distributed.
Title: Re: US-05
Post by: denny on May 20, 2016, 03:23:14 PM
It looks like the longer you primary, the lower your FG. I wouldn't expect US-05 to go super dry. I'm wondering if there isn't infection at play here pre-bottling?

If there were an infection wouldn't I see some evidence on the collar of the bottles?  Also, the carbonation would continue even after I cracked the caps to release some of the pressure. It doesn't.

Not necessarily on either of those.
Title: Re: US-05
Post by: 69franx on May 20, 2016, 03:29:43 PM
My experiences with 05 are that it finishes a lot dryer than I expect. I have gotten anywhere from 79% to 82% ADF with it, even on high gravity beers. My last batch with it was a 1.098 double brown that 2 re-hydrated packs took from that 1.098 down to 1.020, 78% ADF, and IPAs with it have run up into 82%. This does not say yours were not finished, just that it seems to outperform software and manufacturer expectations every time I use it. I have not experienced over carbing that I could attribute to the yeast itself, just improper weights and volume measurements on my part