The anaerobic process by which yeast convert sugars into alcohol and carbon dioxide.

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23
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7answers
44k views

If/When to move to secondary fermentation

Digression from What's the point of secondary fermentation? What are the good rules of thumb for determining a. whether to use secondary fermentation at all and b. when to move from primary to ...
43
votes
3answers
9k views

What's the point of secondary fermentation?

I've always bottled directly after the primary fermentation has finished. What's the point of the secondary fermentation? Can I use a bucket or is it something that really necessitates a glass carboy? ...
8
votes
9answers
2k views

Small Space & Apartment Brewing: Fermentation

Given the limited space of an apartment, what do you do to maintain a steady fermentation? Do not consider budget to be a factor. This is the sixth question in a series of discussions about ...
20
votes
13answers
19k views

[WIKI] Fermentation Temperature Control Methods

What different methods do people use to maintain or control fermentation temps? This includes maintaining temps for both Ales and Lagers. For most climates, active control is necessary for doing ...
21
votes
12answers
48k views

Too long in Primary Fermentation?

What's the maximum amount of time for primary fermentation, assuming the beer is going straight to bottles next? Will it over ferment and then fail to carbonate, if left too long in a carboy?
5
votes
1answer
3k views

What are the benefits of fermenting under pressure?

I hear that some brewers ferment under pressure. What is the rationale/benefits of doing this?
12
votes
3answers
3k views

Should I ferment a new batch directly on the yeast cake generated by the previous batch?

I'm going to re-use the yeast cake from a low-gravity batch to ferment a high-gravity batch. Can I just put the wort directly on it? Does it then need to be agitated? Is it worth the risk of ...
9
votes
1answer
6k views

What is a proper blow-off tube setup?

36 hours ago I brewed a BIG red ale and pitched some kick-ass WLP001. The picture on the left is what I had late last night (24 hr in). Made me a little nervous. And this morning the krausen had ...
5
votes
1answer
4k views

First batch. Tons of bubbling first day and half, little to none now

I can update this later with my specific notes/ingredients, but for now, just the basics...5 gallon brew of an irish stout. The morning after I put it in the fermenting bucket, I woke up to a mess. ...
9
votes
2answers
4k views

Can we estimate the temperature rise in the primary due to fermentation?

OK, this is sort of cheating but I really liked this question so I thought I'd ask the question again in a slightly different way and try and answer it. I was wondering if we can actually estimate ...
22
votes
7answers
2k views

Temperature Control for Fermentation

I am curious how everyone controls the temperature of their primary, especially those that live in the warmer climates. In Florida, where the temperatures can soar and remain in the 90's and above ...
16
votes
6answers
10k views

What's the difference between primary & secondary fermentation?

Over here PJ asked "How do you differentiate primary to secondary if you keep it in the same bucket?"
9
votes
1answer
1k views

What's a good breakdown of all the sugars in regards to brewing?

I'm a little confused when it comes to sugars. It seems like there are a lot of different kinds and they come in many different forms. What affects to different sugars have on brewing? Do they ...
5
votes
2answers
1k views

How can I ferment in a corny keg under constant pressure?

I'm thinking about switching from fermenting (primary and secondary) in glass carboys to using Cornelius kegs. Specifically, I'd ferment a 5.5 gallon batch in a 10 gallon keg. My goal is to ferment ...
11
votes
4answers
2k views

How many degrees will my carboy heat up as a result of fermentation activity?

Recipe calls for fermentation at 70 degrees, basement is 65. I know that fermentation produces some heat, so I was wondering if just letting yeast do its thing will be enough. Otherwise, do I need ...
6
votes
1answer
1k views

Cherry vinegar (was supposed to be mead)

Last week I started a cherry mead and discovered yesterday that it had turned to vinegar (and not even nice-tasting cherry-flavoured vinegar - it smelled and tasted awful, though the colour was ...
5
votes
2answers
1k views

Will Jalapeno or Habanero peppers adversely effect yeast

I have a recipe in front of me for a Saison of the spicy variety. It calls for the addition of one Jalapeno pepper, seeds included. First off, I do enjoy a fair amount of spice (far more than anyone ...
5
votes
6answers
7k views

Can I use wine yeast to ferment beer?

Can I use wine yeast to ferment a beer? What sort of problems might I encounter that are unique to wine yeast trying to ferment malt sugars? What sort of flavor differences might I encounter?
3
votes
4answers
15k views

How do I avoid airlock foam overflow? Does it affect the fermentation process?

During my last small batch brew, American Wheat from Northern Brewer, I came home to find that the foam in the 1 gallon carboy had overflowed the three-piece air lock (which was a mess to clean out). ...
2
votes
2answers
454 views

So I want to make a summer shandy, can I just put fruit in the second fermentation stage instead of juice?

So I was told I can add lemonade or orange juice to my wheat beer to make a summer shandy, can I just put fruit in the second fermentation stage instead?
2
votes
1answer
505 views

Day 2 of Primary Fermentation of beer

Is this what my primary fermentation should look like after a day??? It looks like my yeast has been sitting on top of foam..
1
vote
1answer
652 views

Fermentation hasn't started?

Made a kit on Saturday, 1/2 lb. Caramel 80 specialty grain, 9.15 lbs rye extract. Kit came with the Wyeast American Ale smack pack. When I got the yeast pack out of the fridge, the pack was already ...
11
votes
1answer
5k views

Why is it bad to pitch too much yeast?

What are the effects of over-pitching? Where is the line for, say, a 1.050 beer? There is also a question for to under-pitching.
11
votes
9answers
7k views

Sanitizing oak chips

Going to try using dry oak chips in my secondary fermenter. How do you recommend sanitizing the chips before adding them?
8
votes
2answers
1k views

Dry hopping without secondary fermentation

I have so far only done bottom-fermented beers without transferring into a second vessel for secondary fermentation. If I wanted to do some dry hopping with this technique, when is the best time to ...
7
votes
8answers
9k views

What's a good small-batch fermentation vessel?

After getting started with a few kits, I'd like to start experimenting a little bit. I'd like to start off with 1-gallon batches on anything I'm not sure about, though. I have a growler that I'm ...
4
votes
1answer
893 views

Corny keg fermentors

I had been thinking about using a couple corny kegs as fermentors. Maybe even trimming up some dip tubes to be able to CO2 push finished beer out of the kegs to clean serving kegs. Here are some of ...
2
votes
2answers
546 views

Is primary fermentation finished?

I'm making a doppelbock with an ale yeast, so I'm fermenting in the mid- to upper 60s. It's 11 days in and all the krausen is gone. The top is speckled with what appears to be bright white yeast ...
8
votes
3answers
326 views

Priming Sugar Affect on Fermentation

I screwed up took a batch that had only been fermenting for 3 days and started to bottle it before I realized it was the wrong one. [link] During this screw up I ended up added the priming sugar then ...
8
votes
2answers
2k views

How do I decide if the beer is ready? Is my fermentation complete?

This is my first time brewing and I've followed the instructions from a kit. It says to leave the beer in the key for two weeks and its ready when it stops being cloudy. Its now been a little over ...
8
votes
3answers
3k views

Is a 5 gallon bucket too big for 3 gallon recipe?

I have a few Mr Beer extract kits left over from when I started this hobby. Can I ferment a 3 gallon recipe in a 5 gallon bucket? Will there be too much head space?
7
votes
2answers
736 views

Pressure during fermentation

I imagine other parameters are more important (like temperature or pitching rate). Still, I was wondering if pressure has some effect on the fermentation process (for example on flocculation, ...
7
votes
5answers
1k views

Over attenuated all grain beers

I'm having a problem with all my beers regardless of style getting over attenuated. I've been raising my mash temps up to 4° above each beers style (up to 158° or so) to compensate with no luck. I've ...
6
votes
1answer
458 views

Is this a bottle bomb waiting to happen?

Planning a strong & sweet Belgian style ale, I expected OG to be as high as 1.096. Because of my extremely amateur setup, I used two pots instead of one big one for the boil (between them both I ...
6
votes
2answers
1k views

Strong Sulfur from WLP 351 - how to clear it up quickly?

Does anyone have any tips for helping a beer clear out sulfur faster? - I made a straight Hefe (half wheat, half 2-Row) and use White Labs seasonal "Bavarian Hefe" yeast, WLP351. The beer was made ...
6
votes
10answers
1k 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 ...
5
votes
2answers
699 views

Safely adding enzymes (e.g. Beano) to lower final gravity

I've heard a lot of mixed stories about people adding additional enzymes (Beano, GasX, etc) to their beers to drop the final gravity down very (sometimes undesirably) low. I've also hear mixed ideas ...
4
votes
4answers
219 views

Should I be worried about my bottles exploding?

Alright, so this is my first batch where I came up with the recipe instead of using a recipe kit, and something seems to have gone wrong. Here are my brewing notes so you can see exactly what I did: ...
4
votes
1answer
702 views

How much does gravity typically drop after high krausen

I have two fermenters going with about a cup of slurry of S-04. Pitched Sunday morning at 61 degrees ambient, they were showing activity within 5 hours, vigorous activity within 12 hours. Went to ...
4
votes
1answer
890 views

Malt extract fermentability

Does anyone know of resources that specify the fermentability of malt extracts like muntons and coopers? Has anyone done a forced fermentation on these extracts who has results they are willing to ...
4
votes
1answer
335 views

Accidental steam beer, temp control and diacetyl

I brewed a 16-gallon batch of my Lawnmower Lager, popped it into my Brewhemoth and inoculated it with 3 packets of Saflager S-23. My chilling solution isn't working as well as I'd hoped, and it's ...
4
votes
3answers
227 views

Referment after Adding Priming Sugar

So I accidentally grabbed the wrong fermenting carboy today, this one started fermenting 3 days ago, but already has a gravity of 1.010 (it got a little warm up to 78F). Before we noticed it was the ...
4
votes
1answer
2k views

What “problems” can I have if I bottle just one week fermented beer?

last Saturday (11/09/2010) I brewed a Blonde Ale and pitched US-05 yeast. Today there are only few bubles in airlock, so I think since Blonde Ale is a simple style I could bottle in next Sunday ...
4
votes
4answers
12k views

Ale Fermentation Temp. Too Cold?

Recently, I've had a streak of hot fermentations. My primary vessel nears 80º, and sometimes more. With my latest batch, I've moved to a much cooler part of the house. I expect it to consistently ...
3
votes
1answer
284 views

Will blending a highly attenuating yeast with a highly alcohol tolerant yeast cleanly lower the final gravity in a very high gravity ale?

I've brewed some ridiculous beers in the past, my highest original gravity resulting in over a final 18% ABV using WLP099 yeast. That particular beer turned out well for how inexperienced I was when ...
3
votes
2answers
3k views

Ginger beer that lasts

I want to make a batch of alcoholic ginger beer. However, I know from past experience that one problem with ginger beer is that the bulk of the fermentation happens in the bottles, and I can't drink ...
3
votes
5answers
530 views

How to keep sugar from fermentation and carbonization?

We want to made sweet low ABV cider. How to do that? I understand that yeasts are dying somewhere between 10 and 15% ABV but we want our cider to be between 2 and 5% ABV. We can interrupt ...
2
votes
4answers
7k views

Consistently high final gravity

I started brewing about a year ago, currently on my sixth batch, all using extract and some additional grains. My problem is that my beers consistently finish with a higher than expected final ...
2
votes
4answers
606 views

Fermenter Headspace; Suitable (and cheap!) Containers for Split Batches

After Denny's article in the spring issue of Zymurgy, I'm anxious to experiment and split batches for experimentation with yeast pitching rates, strains, fermentation temps, and adjuncts. I had ...
1
vote
2answers
119 views

Aerating no chill corny keg fermentors that don't seal

I'm very interested in ferment in corny-kegs after reading some questions about that here on this stackexchange. I will try it next batch, but there is a question about aeration/no chilling method: ...