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Brews & Views Bulletin Board Service * Brews and Views Archive 2008 * Archive through March 01, 2008 * US05 and flocculation < Previous Next >

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teetotaler
Junior Member
Username: Nephi

Post Number: 50
Registered: 12-2005
Posted From: 162.116.29.69
Posted on Friday, February 08, 2008 - 10:49 pm:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

I repitched some US05 (because I'm cheap) and I swear it is even less flocculent the second time around. Is there a connection with flocculation and the "end" of fermentation? Are the yeast still doing something if they're in suspension, or are they just not as sticky as other yeasts? I'm ready to give the gelatin thing a try tonight. It's been two weeks, but no, I haven't done a hydro test.
 

Bill Pierce
Moderator
Username: Billpierce

Post Number: 8493
Registered: 01-2002
Posted From: 24.57.225.170
Posted on Saturday, February 09, 2008 - 01:36 am:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

That's another reason in my mind not to repitch dry yeast.
 

davidw
Senior Member
Username: Davidw

Post Number: 1803
Registered: 03-2001
Posted From: 65.163.6.62
Posted on Saturday, February 09, 2008 - 01:52 pm:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

I always find this particular report strange. US-05 has always dropped bright for me after 10-12 days in the primary. Racking to a keg might stir up just a tad of yeast, but a couple days in the serving fridge and it's clear as a bell again.
 

dhacker
Senior Member
Username: Dhacker

Post Number: 1341
Registered: 11-2002
Posted From: 72.155.216.127
Posted on Saturday, February 09, 2008 - 04:13 pm:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

My results with 05 are identical to David's. My last batch of 50/ 50 ale (which I might add is now gone) was frighteningly bright. I will add that I do rack all my beers to secondary, then cool the carboy to serving temp before kegging.
 

Paul Edwards
Senior Member
Username: Pedwards

Post Number: 1530
Registered: 03-2003
Posted From: 69.219.235.47
Posted on Monday, February 11, 2008 - 07:17 pm:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

US 05 has always fallen bright for me, too. But I'm not a big enough cheapskate to re-pitch.
 

Denny Conn
Senior Member
Username: Denny

Post Number: 6631
Registered: 01-2001
Posted From: 140.211.82.4
Posted on Monday, February 11, 2008 - 07:21 pm:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

Yep, I'm another who has no flocculation problems with 05.
 

teetotaler
Junior Member
Username: Nephi

Post Number: 51
Registered: 12-2005
Posted From: 162.116.29.69
Posted on Monday, February 11, 2008 - 07:21 pm:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

Aside from the US05 issues, in general is there a connection between flocculation and "activity" of the yeast? I just used S-04 for the first time to ferment the other half of the batch in question. It started to clear after 4 days or so. Is that yeast also finished "cleaning up" diacetyl and other off flavors, or is the beer still going to be green for 2 weeks or so?
 

Bill Pierce
Moderator
Username: Billpierce

Post Number: 8495
Registered: 01-2002
Posted From: 24.57.225.170
Posted on Monday, February 11, 2008 - 09:17 pm:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

I don't believe there is a correlation between yeast flocculation and the "intensity" of a particular strain. There is, however, often a connection between how fast it takes fermentation to complete and flocculation. More flocculent strains tend to be quick fermenters, although not always high attenuators.
 

Skotrat
Advanced Member
Username: Skotrat

Post Number: 533
Registered: 07-2007
Posted From: 75.67.98.168
Posted on Monday, February 11, 2008 - 09:21 pm:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

I tried this strain again recently...

WHAT THE FLOC?

It did not floc much at all as usual. I am really done with using this strain ever again.
 

Graham Cox
Senior Member
Username: T2driver

Post Number: 1501
Registered: 11-2004
Posted From: 68.32.253.156
Posted on Monday, February 11, 2008 - 09:33 pm:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

I just made a pseudo-alt with it and it dropped clear just fine. I racked to a keg after a couple of weeks and force-carbed it, and it was clear from the first pint.
 

bierslayer
Junior Member
Username: Bierslayer

Post Number: 96
Registered: 04-2004
Posted From: 128.104.92.246
Posted on Monday, February 11, 2008 - 10:28 pm:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

I had a problem getting this yeast to drop as well on one occasion. However, on a repitch following that instance it dropped out fine. So I don't know what the floc to say about that. I guess it means it's probably a good idea to keep some gelatin around when using this yeast.
 

teetotaler
Junior Member
Username: Nephi

Post Number: 53
Registered: 12-2005
Posted From: 162.116.29.69
Posted on Monday, February 11, 2008 - 11:07 pm:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

Just to add some more conflicting data, I too remember getting good floccin the first few uses with this yeast, but lately it's done whatever the floc it wanted to. Strange.
 

Anil Tyson
Junior Member
Username: Anil

Post Number: 76
Registered: 03-2003
Posted From: 76.121.87.39
Posted on Tuesday, February 12, 2008 - 07:47 pm:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

I also have had no flocculation or clearing problems with US05.

As far as the "activity" question - if after 4 days my yeast began to clear, then I will normally wait another 2-3 days take a reading and if it is where I expect it to be I either transfer to secondary or keg depending on what my plan is.
 

Vance Barnes
Senior Member
Username: Vancebarnes

Post Number: 3055
Registered: 03-2003
Posted From: 74.7.7.66
Posted on Tuesday, February 12, 2008 - 08:55 pm:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

I've found it to be slow to floc for another data point. I was wondering if maybe water chemistry might have an effect on how well it floccs or not but then some folks are saying it does well sometimes for them and not other times.
 

Troglodyte
Member
Username: Troglodyte

Post Number: 169
Registered: 10-2004
Posted From: 72.75.86.7
Posted on Thursday, February 14, 2008 - 01:36 am:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

Vance, I've been thinking along similar lines. During Oct-Nov I brewed 2 recipes twice. All four batches were pitched with 05 and three of the four floc'd nicely while the fourth lingered for an extra 5-ish days.

Since I was playing with my water chemistry at the time, I'll go back through my notes and see if I can find something noteworthy to report back on.
 

Paul Edwards
Senior Member
Username: Pedwards

Post Number: 1537
Registered: 03-2003
Posted From: 76.252.33.102
Posted on Saturday, February 16, 2008 - 03:23 pm:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

I just racked an American IPA to secondary after 9 days in primary. I used 2 packs of US 05 for each 5 gallons (because I'm not a cheapskate).

While not perfectly clear yet (I didn't expect it to be), it's clearing nicely.

OG was 1.075, gravity at racking was 1.011
 

Jerrod Scott
New Member
Username: Jrod

Post Number: 1
Registered: 02-2008
Posted From: 71.33.100.173
Posted on Wednesday, February 20, 2008 - 03:28 am:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

Hey all...long time lurker first time poster.

I usually see poorer flocculation in lighter beers with this yeast. If I can't get the yeast to drop in the primary, racking it to a secondary almost always will trigger immediate flocculation. I can't back up this with science but observation only. I also re-use this yeast. Not because I'm cheap (I am) but because I can.
 

Dave Coppes
Member
Username: Pale_dave

Post Number: 157
Registered: 07-2006
Posted From: 24.62.103.102
Posted on Wednesday, February 20, 2008 - 04:32 am:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

Cheap is manly. Oh wait. That was the Joe Namath panty hose post...

My bad.

Where are my manners. Welcome Jerrod!

(Message edited by pale_dave on February 20, 2008)
 

tim roth
Advanced Member
Username: Hopdude

Post Number: 611
Registered: 03-2003
Posted From: 12.206.8.165
Posted on Wednesday, February 20, 2008 - 03:09 pm:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

Welcome Jerrod and thanks for sharing your findings. cheers,tim
 

Paul Edwards
Senior Member
Username: Pedwards

Post Number: 1547
Registered: 03-2003
Posted From: 69.208.151.138
Posted on Wednesday, February 27, 2008 - 02:01 pm:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

Yesterday, I racked an American IPA (for which I'd used US05) to keg. (OG 1.075, FG, 1.011, 75 IBU's of Chinook, Centennial Columbus, and Cascade)

The beer was nearly crystal clear. It'll clear the rest of the way in the keg after I force carbonate.

Seemed to be normal US 05 behavior