Questions tagged [contamination]

The introduction of unwanted organisms or chemicals into the beer. Typically, this refers to unwanted bacteria or wild yeast propagating to levels to cause spoilage of the beer. Often incorrectly called an "infection".

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Wild yeast taking over?

I brewed a belgian triple last week. I was making a starter using white labs trapist yeast, but it didn't take off; must have been a bad vial. So, I picked up a packet of wyeast trapist yeast and ...
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4answers
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Lacto contamination in plastic fermenter = new fermenter?

Just bottled my first contaminated beer, got lazy and didn't freeze/boil the watermelon I added to a wheat beer and got lacto(?) contamination and an amazing sour watermelon beer as a result! But, ...
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1answer
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What is the white film on my beer in my bottles?

I brewed a double batch of IPA with a buddy about 8 weeks ago. We split this into two 5 gallon pails and 2 weeks later into two carboys. His was fine, but mine developed a bit of white stuff on ...
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5answers
43k views

What kind of infection is this and is the beer ruined?

This is my first all-grain batch and unfortunately it has developed some kind of growth. It didn't smell like death, actually smelled pretty good, and the samples I have been taking have all tasted ...
13
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4answers
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How to add adjuncts (hops, fruit, spices, etc) to the fermenter without contaminating the beer?

What is the best way to sterilize things like dry hops, spices or fruit before putting them in the fermenter? Some stuff you can obviously boil. But boiling hops, say, would defeat the purpose of ...
11
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3answers
13k views

Consequences of infection in a beer?

Everyone learns during their first brewing experience that you have to carefully sanitize anything that touches your wort after the boil to avoid infection. What happens when wort gets infected? How ...
7
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5answers
2k views

Help! My secondary fermenter exploded!

So, I was brewing a nice IPA the other day. I walked in to check on the carboy and the stopper had popped out and there were hops everywhere! I stopped it back up and bottled it a few days later ...
4
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1answer
447 views

Photo dictionary of things going wrong

Sometimes things don't go so well. Sometimes relaxing and having a homebrew doesn't quite do the trick. Sometimes it's not just going to fix itself. It would be helpful to have some images to compare ...
6
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5answers
9k views

What is on top of my wort? Mold? Lacto?

I just opened the top of my scotch ale bucket, and it looks like there's mold inside. The recipe is pretty standard, plus some oak chips soaked in whiskey, in a muslin bag. What is this? Edit: Some ...
5
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3answers
291 views

What about opened LME cans?

Most LME come in 3 pound cans, which is a quite large quantity if you want to add just a little to your wort, just one pound for example. It's a shame to throw away the rest. If I open a LME can and ...
8
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10answers
3k views

Spigots: What's the consensus

I like to use an ale pail with a spigot for my secondary. It makes it super easy to test the gravity before actually bottling/kegging/etc. However, that sort of installation in plastic can open the ...

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