Something growing on top of my beer... - Home Brew Forums
Register Now For Free!

Home Brew Forums > Home Brewing Beer > General Beer Discussion > Something growing on top of my beer...

Reply
 
Thread Tools
Old 05-26-2012, 03:24 PM   #1
JohanTheMighty
Recipes 
 
Oct 2011
Irving, Texas
Posts: 73
Liked 9 Times on 7 Posts



Hi, I'm brewing an IPA. I used Coopers, a little over two pounds of malt, about a pound and a half of corn sugar, and just used the yeast that came with the Coopers.

I started my beer several weeks ago, and by several I mean about 3.5 months ago. About 5 or 6 weeks ago I racked my wort from the primary into the secondary. I have not exposed my worth to anything since I first started fermenting it, except when I exposed it to air during the racking process from primary into secondary; I haven't even taken one gravity reading. Further, everything, including all components of the autosiphon were thoroughly sanitized with that brewing iodine.

On Monday of this week, I noticed that there was a small growth, almost sheet like that was growing out from the sides on top of the beer. I figured it was nothing and I haven't thought about it since. Today I took a look and I noticed that the smooth, very thin, sheet-like growth has grown inward from the sides of the carboy about a few more inches. I'm going to try to add a couple of pictures here so you can actually see what I'm talking about. I will admit, it's kind of tough to see the growth, but you can definitely make it out in the pictures. No yeast raft looking things that take your breath away.

So, is it possible that I let it sit and ferment for too long? I always figured that the longer you let it go, the better. Mathematically, I should be looking at something in the neighborhood of 8% ABV, the initial fermentation in the primary carboy was very active and lasted a few days, so up to this point I am confident that things had been going swimmingly. Is this something that I need to toss, or should I just go ahead and dry-hop it at the start of June as I had originally planned?
Click image for larger version

Name:	Picture 001.jpg
Views:	524
Size:	37.2 KB
ID:	62588   Click image for larger version

Name:	Picture 002.jpg
Views:	533
Size:	50.4 KB
ID:	62589   Click image for larger version

Name:	Picture 003.jpg
Views:	532
Size:	24.1 KB
ID:	62590  

 
Reply With Quote
Old 05-26-2012, 03:32 PM   #2
bwarbiany
HBT_SUPPORTER.png
 
bwarbiany's Avatar
Recipes 
 
Jul 2011
Mission Viejo, CA
Posts: 2,940
Liked 1335 Times on 744 Posts


I can't tell anything from the pictures. Can you get some that show it better?

In the meantime, "thin film growing to cover the beer" suggests a pellicle. I'd recommend you do a google image search on pellicles to see if it matches what you're looking at. Since the pictures don't show much, we can't quite diagnose it here...

 
Reply With Quote
Old 05-26-2012, 03:35 PM   #3
Calder
Recipes 
 
Mar 2010
Ohio
Posts: 7,619
Liked 634 Times on 554 Posts


Looks OK to me

 
Reply With Quote
Old 05-26-2012, 04:03 PM   #4
kh54s10
HBT_SUPPORTER.png
 
kh54s10's Avatar
Recipes 
 
Aug 2011
Tiverton, Rhode Island
Posts: 11,425
Liked 1803 Times on 1477 Posts


It is probably just yeast rafts. If the beer smells and tastes OK it probably is OK.

 
Reply With Quote
Old 05-26-2012, 04:03 PM   #5
JohanTheMighty
Recipes 
 
Oct 2011
Irving, Texas
Posts: 73
Liked 9 Times on 7 Posts


I think the second picture shows it best. It seems pretty clear in that photograph.
Click image for larger version

Name:	Picture 002.jpg
Views:	516
Size:	50.4 KB
ID:	62596  

 
Reply With Quote
Old 05-26-2012, 04:31 PM   #6
passedpawn
Waste Allocation Load Lifter - Earth Class
HBT_ADMIN.png
 
passedpawn's Avatar
Recipes 
 
Apr 2009
☼ Clearwater, FL ☼
Posts: 26,647
Liked 7047 Times on 4175 Posts


I wouldn't be too concerned yet. However, growths that form from the glass inward are suspect for sure.

Let it go for a while longer. If you get large bubbles on this film, that's bad.

Check this thread out and see if what you have (or what it becomes) matches anything here.

http://www.homebrewtalk.com/f127/pel...ection-174033/
__________________
- Andrew

 
Reply With Quote
Old 05-26-2012, 05:25 PM   #7
JohanTheMighty
Recipes 
 
Oct 2011
Irving, Texas
Posts: 73
Liked 9 Times on 7 Posts


Well, passedpawn, it doesn't look anything like what I saw in that collection of pellicle photographs, but I've been looking up yeast rafts, since it too was mentioned on this thread, and it looks like awful lot like the pictures of the yeast rafts I've seen so far. And upon shining a flashlight into my brew, I have seen that there are plenty floating freely in the pool as well.

Yeah, I think I'm just going to stick with my original reaction, which was just, "Oh hey, what's that? Eh, probably nothing", dry-hop it as originally planned, and then bottle it up. Hell, if it tastes like ass I'll just make a new batch. I mean, I'm pretty sure that if this growth was due to some kind of infection resulting from the primary to secondary racking 6 weeks ago, by this time it should look like I have a big fuzzy head floating in there!

 
Reply With Quote
Old 05-26-2012, 07:38 PM   #8
badbrew
Recipes 
 
Dec 2011
l.a., ca
Posts: 1,372
Liked 13 Times on 13 Posts


You have no desire to taste it after all this time?

 
Reply With Quote
Old 05-26-2012, 09:05 PM   #9
JohanTheMighty
Recipes 
 
Oct 2011
Irving, Texas
Posts: 73
Liked 9 Times on 7 Posts


I could, but that would spoil the surprise!

 
Reply With Quote
Old 05-26-2012, 10:12 PM   #10
homebrewdad
HBT_SUPPORTER.png
 
homebrewdad's Avatar
Recipes 
 
Jan 2012
Birmingham, AL
Posts: 3,275
Liked 384 Times on 279 Posts


Looks like yeast rafts to me, too.
__________________
Check out the priming sugar calculator, yeast starter calculator, and the beer calorie calculator.

 
Reply With Quote
Reply
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
What is growing in my beer/wort?! Acumen General Beer Discussion 11 06-17-2009 02:46 AM
I think wheat beer is growing on me LumberjackJohn General Beer Discussion 5 12-20-2008 02:01 PM
Hop growing Parker36 General Beer Discussion 4 12-11-2007 02:46 PM
Growing my own hops. Sanityworkshop General Beer Discussion 22 02-04-2007 08:14 PM
Hops Growing pilkinga General Beer Discussion 2 01-05-2005 02:22 PM


Forum Jump