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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1answer
172 views

Would boiled vinegar contain any acetobacter?

I love the taste of Balsamic vinegar, and I think having just a hint of it would be fantastic in a stout's flavor profile. My concern is what would happen to a beer after this is added. Would it start ...
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1answer
522 views

Possible wild yeast contamination?

In May I brewed the following beer: 81% Pale 2 row malt 16% Brown malt 3% Black malt Single step mash at 73C. With 290g of hops for a total of 103 IBUs. The OG was 1.077 and it went into primary ...
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1answer
86 views

When racking my beer, it looked like someone had poured cream in

I made my first beer from a kit and followed the instructions carefully as well as reading around. Specifically, I was very careful about cleaning and sterilisation. I had a 2 FV setup and after 2 ...
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2answers
495 views

I waited 48 hours to pitch and detected fermention prior to pitching

I brewed on Monday but pitched over 48 hours later on Wednesday, because my temperature control was finicky and I wanted to wait until the wort hit the proper temperature before pitching. Normally I ...
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4answers
118 views

Contamination concerns when removing stopper?

This might seem dumb to most, but it's only my third batch and I just need some reassurance. So, I occasionally pop out the rubber stopper on my carboy to smell the brew and see if anything funky ...
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1answer
451 views

Is this pediococcus contamination('infection')?

A berliner weisse we forgot to bottle for around a month and a half. Did not introduce pediococcus or lactic acid in the fermentation. Did a sour mash before the boil so lactobacillus shouldn't have ...
4
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1answer
2k views

Is there a way to tell if fruit flies have laid eggs?

I am going cross-eyed trying to tell if there are fruit fly larvae on the walls of my continuous brew kombucha. I have seen fruit flies on the outside, but I don't think they can get in through the ...
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3answers
189 views

How (and how soon) can I determine if my primary is contaminated?

My brew day ran long and by the end of the process I was tired and ready to be done. Due to this lapse in concentration I had a major failure in my sanitation process - I forgot to sanitize my better ...
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1answer
362 views

Has My mead gone south?

This is rather my first time doing a mead. It has been a month since i put it up for fermentation. Its been locked in a relatively stable temperature and totally dark enviroment. Today, after a full ...
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5k views

Water level low on airlock. Is it contaminated?

About 48 hours into my ferment I noticed a significant amount of liquid (about an inch) is missing from my airlock. Reading up on the subject I've realized that water was probably sucked into my brew ...
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4answers
3k views

Overcarbed or gusher contamination('infection')?

Is there an easy way to detect whether excessive foaming / gushing is the result of over carbonation or a gusher contamination? Perhaps a telltale taste or other indicator?
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270 views

Fermentation - Lost cause?

I believe my first homebrew is a lost cause. I'm at 3 weeks, and each week I've done a gravity reading and a taste. The flavor has gotten increasingly sour(astringent) with each week. It's almost ...
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1answer
47 views

Can I deal with diluted amounts of preservatives and still get good hard cider?

On a whim I decided to throw some Cider in a bucket, so I went to the store and grabbed some. I took a chance and bought 2/3 no preservatives and 1/3 preservative (4.5 Gallons total) in order to ...
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5answers
192 views

trying to ID if my beer was infected!

My brown ale smelt somewhat like beer and possibly vinegar and tasted the same but with a very subtle sweetness but also very dry and puckering. I used only used dry extract and boiled the hops, no ...
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2answers
817 views

Raspberry Stout Contamination('infection')?

I brewed a 5-gallon batch of Frankenberry Chocolate Raspberry Stout July 20 (11 days ago) using a Scottish Ale Wyeast. The yeast was pitched at 78 degrees, everything was sanitary, I immediately ...
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2answers
2k views

Should dry hopped beer be lightly stirred prior to bottling?

I'm making an IPA and I'm going to be dry hopping it this weekend in the secondary fermentation phase. I've been thinking about the dry hopping process alot, mainly about the diffusion of the ...
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1k views

Overflowing Airlock and Contamination

I use a Raspberry Pi with water-proof temperature probes to monitor the temperature of my fermenting wort, and I feed the probe through the airlock to make direct contact with the wort. Two out of my ...
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2answers
496 views

Consecutive (lacto?) contamination('infection') with different fermenters

My two last batches got a sour/white wine taste to them (prior to bottling). The first one was a Hefeweizen fermented in my bucket. The taste was present from day 4 up to bottling a month later. In ...
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1answer
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Is this wort infected? (*Picture)

This is my 30th or so batch and I've never seen this before. The best way I can describe it is that it looks like summer in the Arctic and pieces of ice are breaking off the ice caps. Any idea as ...
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4answers
2k views

Does Dry Hopping create a white film with bubbles?

Might be a weird question! I have brewed, with a friend, 6 batches of beer so far. An IPA, then a Stout, a Saison, a Doppelbock, an Baltic Porter and finally, the same IPA. All grain, always. Of all ...
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5answers
206 views

Did I just contaminate my beer?

I brewed my very first batch almost 4 weeks ago. I currently have my beer in a secondary fermenter (glass carboy) and plan on bottling in a couple days. I dry hopped it late last week. Today I got ...
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2answers
2k views

Do I have contamination('infection')?

Beer Kit: Brewferm TarwebierThis was my first time using StarSan as it's hard to get in my neck of woods. Is this some ugly Krausen or an infection, if so what type? Is there any recovery from this, ...
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3answers
197 views

How do I get a turkey baster out of a carboy?

When I was pulling wort out of a carboy to take a hydrometer reading, the bottom part of the baster separated from the head and fell into the carboy. What's the best way to get it out with the fewest ...
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4answers
2k views

Waited 6 Days after boil to pitch yeast, Wort had what looked like mold, what can be done?

Like the title says, after I chilled my wort I realized the kit I ordered did not come with yeast, an error on the packers fault. Because of my work schedule I wasn't able to pitch the yeast for about ...
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2answers
1k views

Test for Acetobacter in Cider

I started my first cider yesterday. I am concerned that, because I haven't pasteurised I am running the risk of getting 12 litres of vinegar. Is there I anything I can do, now fermentation has ...
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1answer
4k views

There is a white film on the top of my bottled beer, what is it?

We brewed beer (Double IPA) for the first time, and we bottled the beer 1 week ago. Now when I look at all my bottles, they all have that white film on the top and I was wondering what it could be? ...
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3answers
1k views

Should I dump a batch with rubber smell?

I have in bottles a batch smelling like chemicals or rubber. I'm thinking keep it a while, and check if the smell fade out. Is this possible? Or I'm just wasting my time with this batch? As side ...
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1answer
746 views

Mead has infection/discoloration

I brewed a sweet mead on February 24th, 2013, racked it to secondary on April 4th, 2013, and was getting ready to bottle it now (end of July). I had been out of town for a few weeks and when I came ...
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2answers
4k views

White Stuff -- is it bad?

I just brewed a raspberry wheat w/ ~2.5 lbs of frozen (organic) raspberries added to the secondary. I waited about 23 days after adding the berries to bottle, and when I went down to the basement to ...
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1answer
335 views

Infection (SCOBY/Acetobactor) or possible over-use of a fining agent?

Situation Never mind the two hop bags that didn't sink, those things are more buoyant than what I gave them credit for. This is the beer in a secondary vessel. I wanted to get it off the yeast cake ...
3
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1answer
418 views

Is this white thing correct in kriek lambic?

I'm making my first lambic beer, a kriek lambic with a one month old, last week I dropped 1lb cherries. Today, I noticed this white thing in top: Should I concern about this? Or just let it go...
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3answers
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My ferment has small black specs in it, is this an infection?

This seems to be very similar to this question about hop seeds but I have not used fresh hops, I used pellet centennial hops purchased vacuum packed and frozen from homebrew shop. Ingredients (1 ...
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290 views

interesting formation in fermenting beer

Anyone have a clue what these formations are in my Kolsch style beer? Been in secondary for about 3 weeks due primarily to lazyness. I cleared with gelatin about two weeks ago and it's nice and clear ...
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1answer
5k views

Is this lactobacillus?

My last batch had a thin whitish 'membrane' on top of it and some white spots, visible on the picture bellow. I think I saw something similar on a blog a while ago, attributed to a lactobacilus ...
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3answers
1k views

Preparing water for brew day

I'd just like to get some opinions on the most efficient way to prepare the water for my brew day. I'm pretty new to brewing and still using extract with a few specialty grains. I've read it's good ...
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2answers
2k views

Possible contamination / small areas of bubble clusters on top of brew

How would you know if your brew is or isn't contaminated? I'm the first timer that dealt with the broken spigot & had to transfer at 6 days. Just hearing about contaminated home brew so many times ...
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1answer
2k views

First Brew: Yellow Mold - Transfer to Carboy - Slowing of Fermentation

I brewed a batch of Pale (first solo brew) and after pitching yeast (6 hours), noticed yellow clusters of what I think was mold. I thought I had an infection, so I siphoned off, and collected ...
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3answers
337 views

How worried should I be about a plastic-wrapped kettle that had to air chill for two days?

I was in the middle of a 7-gallon brew, when my landlord informed me that the grain that I had put down my garbage disposal had clogged the main drain for the house. My sink is too small for an ice ...
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2answers
5k views

Is my batch contaminated / infected?

Me again with another question. So there's not been much activity from my brew lately (no bubbling, only 3rd day in the fermenter). I opened up to take the gravity and temperature (1022, 21C), so it ...
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3answers
3k views

Ways of saving an band-aid beer

I am exploring what in my process could have possibly caused this flaw, but it is likely old yeast propogated in a starter and then pitched, as this has not happened to me ever before. What I am ...
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4answers
3k views

Can a little human spit spoil fermented beer?

The other day, I was with my friend getting ready to bottle a batch of modified cream ale (our second homebrew so far). We were using an auto-siphon to transfer beer from fermenter to the bottling ...
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2answers
2k views

Slight fizz in beer after 6 days in the fermenter - game over?

I put a batch on last Sunday, started off with a crazy high reading on the hydrometer (around 1080 when I was expecting 1040ish according to the kit) - though I suspect that was because I drew a ...
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1answer
6k views

How to identify a brett contamination

I brewed a single hop American pale ale with palisade. It's not the greatest beer in the world, but seemed passable to me. Another brewer tasted it and thought he picked up brett in it. Palmer says:...
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1answer
1k views

Is iodophor ideal for rinse-less sanitization before bottling?

I was talking to a friend today and complainIng about the clean/bleach/sanitize/rinse process I undergo when bottling. He dug a bottle of iodophor out of a back shelf and asked me to try it out. He ...
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881 views

cleaning vs. sanitizing

I have made over 50 batches of homebrew, and I have a confession: I rarely CLEAN my equipment. I take a quick look to see if there is any visible debris/dust, etc., and if so, I will spot clean it or ...
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2answers
276 views

New brewer, question about state of beer prior to bottling

Tomorrow is the Big Bottling Day. I snuck a peek about a week ago and took a hydro reading, and all is well I believe. I took another peek today (14 days in) just to make sure I'm not about to bottle ...
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1answer
662 views

contamination? what's this?

I brewed a hoppy red ale on Tuesday and pitched some washed wyeast 1084 into it that evening. I had an og of 1.070 and went ahead and put a blowoff tube on the fermenting bucket in case I had a huge ...
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7answers
32k views

Can Infected beer cause death or major illness?

Basic question. Can you get sick and die from drinking infected brew? I know that it must taste terrible, was just wondering. Can't seem to find any references where people have died from infected ...
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2answers
348 views

Mold on wort pre-pitch

I've got a bit of mold on top of my wort. My situation is a bit different than what others seem to have encountered... I made the wort about 5 days ago and hadn't gotten around to pitching the yeast....
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3answers
15k views

does starsan kill yeast

Is Starsan effective against yeast? After resuming homebrewing again after a 2 year break, I started having pellicle appearing on my starters (after fermentation had completed), which has now spread ...