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Old 04-04-2013, 03:41 AM   #1
Apr 2013
Posts: 3

Brewed my first batch, a standard English ale (Munton's LME) and it's pretty tasty. Most bottles, anyway. Tonight I found my second bottle that has what appears to be mold floating at the top of it. I also notice that the two bottles with the mold seem to be way more carbonated than the ones without, and there is definitely a foul taste to the ones with mold (as you would imagine). Most of the beer tastes fine though. Anyone have any ideas as to what might've caused this?

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Old 04-04-2013, 03:42 AM   #2
Nov 2012
Elmhurst, IL/ Cedar Falls, IA
Posts: 166
Liked 21 Times on 13 Posts

Not seeing any pics

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Old 04-04-2013, 03:44 AM   #3
Apr 2013
Posts: 3 first post...trying to get the pics up.
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Old 04-04-2013, 03:48 AM   #4
chumpsteak's Avatar
May 2011
Meridian, ID
Posts: 852
Liked 96 Times on 79 Posts

Guessing you didn't get some of your bottles washed good. Soak in hot PBW overnight and then rinse really well. Sanitize before bottling.
Well lucky you, the devil made you look....

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Old 04-04-2013, 04:18 AM   #5
Mar 2013
Portland, Oregon /, Bucerias, Nayarit
Posts: 148
Liked 21 Times on 19 Posts

Plus one on funk in the bottles and soak/rinse/sanitize.
"The next best thing to drinking good beer is wearing it" -me

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Old 04-04-2013, 01:04 PM   #6
Apr 2013
Posts: 3

I did cleanse and sanitize all bottles with the no rinse sanitizer. But I didn't soak overnight, just soaked long enough to get labels off. I'll be more intense about it this next go round and hopefully won't have an issue. Thanks for the responses.

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Old 04-04-2013, 01:15 PM   #7
Sep 2012
Ann Arbor, Michigan
Posts: 2,553
Liked 347 Times on 278 Posts

I'm not saying it isn't mold (hard to tell from the pics). The second is a little blurry and the first looks a little like a different fungus: yeast. I have noticed it on beers that I sucked up a little extra trub and they had lots of yeast in the bottle. If you don't pour carefully, you get it in the glass and it causes a strange flavor. Also a strange GI reaction...

Again, it could be mold, I just can't tell.

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Old 04-04-2013, 01:20 PM   #8
fizgig's Avatar
Feb 2013
Royal Oak, MI
Posts: 465
Liked 46 Times on 37 Posts

Looks like the same thing in both pics to me, second the notion it was in the bottle at bottling time.

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Old 04-04-2013, 01:46 PM   #9
Progressive Brewing
IslandLizard's Avatar
Jan 2013
Pasadena, MD
Posts: 6,980
Liked 1240 Times on 1060 Posts

It looks like your bottles were not 100% clean.

1. Soak the bottles in PBW or washing soda (lots cheaper) overnight.

2. Use a bottle brush to clean the inside well and a stiff brush to remove glue residue from the outside.

3a. Rinse out with very hot water, inspect for cleanliness.
Use one of those faucet jet cleaners. They work wonders to rinse the inside.
If you need to store them, do so in a way to keep them clean.

3b. I prefer to give them another PBW or washing soda wash with the bottle brush or jet spray if they've been sitting around for a while. You want to be sure they are 100% clean.

4. Once clean, right before bottling, sanitize inside and out by immersing in a plastic tote with Starsan (my preference) or Iodophor.

5. Drain the remaining Starsan by placing the sanitized bottles upside down on a sanitized countertop, or sanitized bottle tree and fill with beer using a bottle filler. Keep everything well sanitized.

6. Cap with clean and sanitized caps.

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