The temperature of the wort during fermentation. Often different from the ambient temperature since fermentation is an exothermic process (releasing heat).

learn more… | top users | synonyms

3
votes
1answer
122 views

What will be the effect of allowing fermentation temperature to drop on a nearly finished fermentation?

I brewed this Northern Brewer saison kit and picked the Wyeast 3724 belgian saison yeast. Only later did I discover that this yeast has a tendency to stall out. So as a preventative measure I ...
3
votes
4answers
1k views

Will rapid ambient temperature drop kill yeast or just slow them down

I have just put on my first all grain homebrew (a porter) here in Melbourne, Australia. After a day or so it was bubbling away quite nicely. A couple of days ago the weather decided to change ...
3
votes
2answers
415 views

How much time should a warm-fermenting yeast strain sit at the high primary temperature?

I made a batch of braggot (~46% honey) a couple of weeks ago, and used the Duvel strain (a pack of Wyeast 1388 and a vial of WLP570). Pitched at 65 and ramped it up to 82 over the course of 7 days. ...
3
votes
1answer
1k views

Temperature for fermenting a hybrid (california common)

I'm planning to brew a California common "steam" beer. I will be using a bottom fermenting lager yeast, specifically Wyeast 2112 California Lager. This is intended for a warmer fermentation, up to 68 ...
3
votes
2answers
529 views

What is the benefit of long fermentations/leaving beer on yeast for weeks?

I know the 'general' answers: "it allows the yeast to 'clean up' compounds", "it allows the beer to 'condition'", "it allows the flavors to come together", none of which I am satisfied with. My ...
3
votes
2answers
285 views

Can lowering temperature too rapidly result in stuck fermentation?

I have fermented my last few batches with a swamp cooler - putting my bucket into an igloo cube cooler filled with water and ice. They've all been ales. I usually start in the high 60s/lows 70s ...
3
votes
2answers
542 views

Diacetyl Rest on Cream Ale

Have a cream ale (OG ~1.059) that has been fermenting at the low end of US-05's range (57-59 degrees) for just about two weeks. Didn't test gravity, but still saw a decent krausen ring and airlock ...
3
votes
1answer
423 views

What is a swamp cooler?

What type of equipment do you need to build one? How do you use it? What are the realistic expectations of using one?
3
votes
3answers
2k views

Should I move primary to lower temp?

I'm brewing a dubbel and pitched a 1000ml yeast starter of Wyeast 1214 at 68F. It's fermenting in a room now with an ambient temp of 72F. Over the course of 30 hrs, temp has increased to 78-79F ...
2
votes
1answer
642 views

How early can I know if a brew is ruined?

Today I tried my very first brew using a Coopers DIY kit. I was told the Lager mix that comes with the kit probably won't taste amazing, but it should be hardy and forgiving for beginners that don't ...
2
votes
3answers
2k views

How does ambient/room temperature compare to fermentation temperature?

My first brew day is approaching and in preparation I have been monitoring the temperature of the room I plan to use. Initially I was seeing daily fluctuations from 16C to 25C as the heating came on ...
2
votes
1answer
1k views

Side-effects of 'lower than recommended' fermentation temperatures?

I have a Ginger Beer kit on the go. It's sitting in the kitchen and ambient temps are ranging from 15 to 20ºC (59-68ºF). The beer was started 3.5 days ago and I was away for the weekend, I can see ...
2
votes
2answers
557 views

Am I fermenting homebrew kit at too low a temperature

Total newbie here so sorry for the very basic question. I started doing a the Coopers Lager kit last night (using the standard Coopers Homebrew start kit set up). It said in the instructions to add ...
2
votes
1answer
420 views

What is the best way to measure temperature in a swamp cooler?

I am thinking about setting up a bucket-o-water/t-shirt swamp cooler for my primary fermenter. The ambient temperature is about 82degF and I would like to ferment an American Ale around 74degF. I have ...
2
votes
1answer
305 views

Dropped the temperature as it was getting out of control, did I shock my yeast?

Making an IPA with an OG of 1.069, we pitched at 70°F with good ol' Safale US-05, just dry out of the packet as I've always done with US-05 with good success (I tend to trust it a little too much ...
2
votes
3answers
146 views

Brew stops bubbling at night

Yes - another novice question from me :( Our brew bubbles away through the airlock for most of the day, but when I come down in the mornings it is dormant (no bubbles for the 2 minutes I was looking ...
2
votes
3answers
794 views

How do I use this Digital Temperature Controller?

For my birthday, I asked my sister for a Digital Temperature Controller. Rather than buy the one from Norther Brewer, I found what I thought was a better deal from Pex Supplies. However, it looks like ...
2
votes
1answer
48 views

Pitched dry yeast into 57F wort, underfilled the fermenter with water… have I ruined my batch?

So, I was brewing my Brewer's Best Kolsch LME kit, and I made four errors. First, I skipped rehydrating, yielding to the boxed instructions instead of the packet. Second, I overestimated how cold my ...
2
votes
2answers
78 views

At what point on a Yeast's Optimal Temperature Range should the power to a Fermwrap be turned off?

I finally hooked a PowerSwitch Tail II up to my Raspberry Pi and Fermwrap. The RPi has DS18B20 temperature probes directly measuring the temperature of the wort by going down through the airlock. For ...
2
votes
3answers
4k views

Heating pad for fermentation

Is there any concern with warming up a fermentation by placing the bucket/carboy on an electric heating pad? Will it kill the yeast that settles on the bottom?
2
votes
1answer
148 views

Does Low-Attenuated Wort due to Low Temperature have a Higher Propensity to Bottle-Bomb while Bottle Conditioning at a Higher Temperature?

I bottle condition underwater with frozen water bottles to keep the temperature down. I probably bottle conditioned my last batch of beer beneath 60*F, and it didn't carbonate all that well, or at ...
2
votes
3answers
306 views

How to control temp between two fermenters in the same chamber

I have room for 2 5-gallon fermenters (ale pails) in my fermentation chest, and would like to conduct two fermentations at once. Typically, I insulate my temp controller's probe against a fermenter, ...
2
votes
4answers
613 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 ...
2
votes
1answer
295 views

Fermentation Schedule on a Biere de Garde

-TLDR version of the questions: How long could/should you keep fermented beer on the yeast at 72 degrees after reaching an appropriate final gravity before racking/bottling to minimize off-flavor ...
2
votes
2answers
829 views

Noob here… My second brew - am I brewing an ale or a lager, and did I stuff it up?

So I went to my local homebrew store to purchase a an "Aussie honey lager" extract kit but they were out of stock. The friendly man behind the counter helped me to re-create this kit by checking their ...
2
votes
2answers
1k views

US-05 Fermentation Temperatures / Top Cropping

Brewed a 1.060 OG IPA last night (extract), pitched a packet of US-05 reconstituted with 5 ounces of water. Pitched at 68 degrees, but I wanted a clean fermentation with minimal esters, so I have the ...
2
votes
2answers
3k views

Belgian witbeer: Which fermentation temperature in comparison to a Bavarian Hefeweizen?

I have recently made a Bavarian Wheat that all my "co-drinkers" liked quite a lot. I have fermented that pretty cold (18C/64F), since I don't like these beers when they are overly estery and tasting ...
2
votes
2answers
766 views

Which fermentation temperature should I favor?

I am doing a dual brew this weekend. First up will be my Engine 97 Steam Beer (aka California Common - see recipe here: http://www.lootcorp.com/recipes/engine-97-steam-beer.html - credit for original ...
2
votes
1answer
488 views

Will this Pilsner technique work?

I want to brew the Brewers Best Continental Pilsner with the given equipment and parameters that I have, which is not much. My basement is averaging 40-45°F (4-7°C) degrees which I think should be ok ...
2
votes
2answers
346 views

What to brew in the summer?

What kind of beer can I brew in the summer (30C by day, a few less by night), without special cooling equipment? Anything special (but not too coplicate/expensive) I should do?
2
votes
1answer
441 views

Initial fermentation temperature for saisons?

It's summer, and that means that my basement is too warm for English and American ales, but I did make a really fine French farmhouse ale (saison) at fermentation temperatures of about 75F. I've ...
1
vote
3answers
854 views

Adding boiling water to raise temperature during fermentation

Beer was getting cold so in a desperate attempt to raise the temperature I put near boiling water into the container. So 450ml into 23litres of beer. The beer had only been brewing for 4 days. Will ...
1
vote
3answers
404 views

Does too Low of a Temperature affect Taste?

I currently have 4, 5 gallon batches going. After a bad episode of brewing at a high temperature (72-75*F) for 2 batches, I have gone in the opposite direction and aim for 60*F, and frequently dip ...
1
vote
3answers
2k views

US-05 Fermentation Temps

On the package of the US-05 it says it's temperature range is 58-75F. However, all the reading on forums I am finding people tend to the lower end of the spectrum, even calling upper-60's to be too ...
1
vote
2answers
868 views

When to conduct diacetyl rest?

I have my first lager fermenting at 50 degrees (pitched Saturday 8/18 at 11pm, tonight will be pitch + 5 days). Airlock activity started Monday AM, been going consistently since. The problem I am ...
1
vote
1answer
725 views

Kolsch fermentation temps and schedule

I'm brewing a Kolsch beer for the first time with a pretty straight forward recipe using WLP029 yeast. I've only brewed basic ales so far and I'm confused about the fermentation temps and times for ...
1
vote
1answer
2k views

BrewJacket - How does this Work and How can I replicate it?

https://www.kickstarter.com/projects/433436998/brewjacket-immersion-lager-beer-without-a-refriger I've spent the last year determining how I can combat the hot temperatures to brew beer. I resort to ...
1
vote
1answer
815 views

Day Three, still no apparent fermentation

During my most recent brew session I may have been a little too relaxed, and had a few too many homebrews during the process. I feel like I did everything right and kept everything sanitary, but ...
1
vote
2answers
75 views

how to stop fermantation in my locally made millet drink

I make my own local millet drink sweetened with malt sorghum. But I want to keep it free from fermentation for weeks. How? I have sorbate but is not working.
1
vote
1answer
164 views

Does Warming Up Carboy After Pitching Yeast to Fermentation Temperature Decrease Lag Time?

When I adopted proper aeration and a yeast starter, I decreased my lag time to roughly 12-14 hours. Recently I bought Ferwraps and have been using them. One night, I got the idea to apply the ...
1
vote
1answer
136 views

Regulating Temperature in Closet

I'm just starting to brew and I was wondering if my closet would be cool enough to properly ferment. During the winter my house is usually in the mid 60's. Should I still do something else to regulate ...
1
vote
2answers
1k views

Lager yeast fermenting at 25-30C

The summer is approaching, and I would like to make some experiments using lager yeast, just completely out of its temperature range. I guess that steam bear was made using lager yeast at higher ...
1
vote
2answers
284 views

Slow temperature rising vs equivalent fluctuations

I've read a few accounts of brewers using slow temperature increments to bring out particular flavours from the yeast that they're using. For example, stepping up 1C or so every day over a few days. ...
1
vote
3answers
140 views

Quick fermentaion, what should i do?

I made a batch of cider 6 days ago, and it started fermenting nicely, however now the bubbles in the air lock have slowed to nearly 1/min (according to my recipe means it's fermented) However this is ...
1
vote
2answers
151 views

Is it HOT enough for ya!

How do you determine the right temp? Should everything be brewed @ the same temp or can different temps offer different drinkable results? My first try at my own recipe was steeped @ 120 degrees ...
1
vote
2answers
50 views

Why is the primary stage of fermentation of wine important?

Senior chemistry student, whilst I know the main reason, I would like to know more of the chemistry behind it.
1
vote
2answers
85 views

A side by side comparison of open vessel vs closed vessel natural temp rise during fermentation

Would an unjacketed open fermentor, ferment cooler than an unjacketed closed system, given everything else equal. The idea being the ease of releasing strain and pressure on the yeast in an open ...
1
vote
1answer
54 views

my temperature is too high what can i do?

i have just added all the ingredients for my first coopers lager beer kit. I am aware that my temperature is too high at 32degreesc and the kit says to be from 21-27. will this ruin it? i heard it was ...
1
vote
1answer
101 views

Lambic fermentation/aging temperature

I am anxious to start a batch of lambic, but have some reservations timing wise about the temperature in my basement currently. My basement goes from around 45 in winter (now) to 60-65 at the end of ...
1
vote
2answers
91 views

Will a yeast that ferments at higher temps stop fusels?

I have trouble with controlling temps and do not have much room for my growing collection of fermentation bins but I'm trying the swamp cooler for my 5L DemiJohn white wine kit. I'm gonna get some new ...