Temperature plays a key role throughout the brewing process, particularly during the mash and during fermentation.

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Effect of temperatures over beer oxidation

Does temperature affect the oxidation of a beer ? Is a beer at a high temperature, let's say 30C (86F), more susceptible to oxidation that one in low temperature near 0C (32F) ?
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169 views

What is the proper way to maintain temperature in a water cooler Mash tun by adding hot water?

I bought the 10 gallon water cooler from Home Depot. The hole in it is about 3/4" diamater. After discovering that Home Depot, Lowes, Ace Hardware, and etc. did not sell all the components (hose ...
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2answers
167 views

Temperature control during 1st phase fermentation

I am having some issues keeping the temperature controlled. I live in SE QLD and the daily ambient temperature has been 23 degrees C down to 11C. I've been advised not to let the wort drop below 18C ...
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1answer
54 views

How does the attenuation limit from mash temperature affect yeast attenuation?

Like, for example, if you select a yeast with an average attenuation of 80%, but you mash at 160, which limits attenuation to 76.8%1, would the limit simply be the lower of the limit or the average ...
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664 views

overheated the mash by a long shot

I asked before and got some help and have done some reading since. The temp in my mash jumped from 175 to about 195 after I put the lid back on. How much damage did I do? Some things I've read since ...
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74 views

Would Yeast survive the temperatures of distillation and properly carbonate?

Theoretically: If one were to distill a beer at 172.3-211.9*F with the intention of throwing away the distillate, in order to produce non-(or low-)alcoholic beer, would the remaining beer contain ...
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1answer
61 views

How do I extend my kegerator beer line run properly?

I have a built in kegerator in my kitchen, under the counter style. It is connected to a three tap handle tower and the lines are about 3 feet long. The noise from the compressor/fan is louder than I ...
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797 views

Going Below Optimum Yeast Temperatures (For Ale in Particular)

So I understand that going above the optimum yeast temperature specified is a bad thing and will cause major off flavors. But what happens when you go underneath it? For example, I am currently ...
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1answer
87 views

Thermal expansion of wort

Does anybody know an algorithm or a calculator to compute thermal expansion of worts? Most of the time in homebrewing materials, it is said that in volume calculations one should account for 4% ...
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2answers
69 views

Half my batch (while carbonating) got put in the fridge by mistake

They were put in the fridge at day 11 or 12. I'm afraid to take them out (to resume carbonation) because of skunking. Is this valid? I've read the other questions about carbonation/temperature, etc, ...
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2answers
64 views

Buying Yeast Online and Temperature during Transit

I buy everything from Northern Brewer and it takes UPS 5 days to ship to me (If I'm not home early enough from work on Friday, I have to wait the weekend too). Next week is going to have three days ...
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6answers
1k views

Warming up a demijohn / carboy

As a continuation to my previous question about a very slow fermentation of sloe wine, I think my demijohn is just too cold where it is. I haven't taken readings - I'm still fuzzy on how - but judging ...
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288 views

Do I need to continuously measure the temperature of my mash tun?

From what I understand, the all-grain brewer warms up water to a particular temperature (usually 10-15*F over the strike temperature), adds this warm water to the grains in a mash tun, in an attempt ...
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1answer
208 views

Does temperature rise time between mash steps matter?

When doing a multi-step mash, does the amount of time you take in between steps to raise the temperature make a difference? (Aside from the obvious "taking longer will make your brew day take ...
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6answers
604 views

What type of beers stand up to temperature variation during fermentation?

I've just moved from a Condo into a house, where I am now paying for heat. In the area that my Domestic Sergeant Major has permitted me to brew in, the temperature varies from 16° to 21° C throughout ...
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2answers
539 views

How to Properly Increase the Temperature of a Batch after Primary Fermentation

I've read tidbits how that after the first 3 days of fermentation, you would ideally raise the temperature of the carboy for the remainder of the brew. How, exactly, does one do this? Say the Wyeast ...
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4answers
791 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 ...
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3k views

Will refrigeration help carbonate my beer?

After two weeks of bottle conditioning at about 55-60°F (13-16°C), my beer is still a bit flat. I put a few in the fridge and after 2 days, they tasted just as flat. At this point, what should I do? ...
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2answers
62 views

Temperature of wort hit 50*F when yeast has a minimum temperature of 60*F

This is unrelated to the question I just posted here. (Yes I'm having a bad day regarding temperatures, both too hot and too cold!) My yeast had a temperature range of 60-72*F. It has been brewing ...
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1answer
64 views

Temperature of Wort hit 89*F when yeast has maximum temperature of 72*

... I rigged up a raspberry pi and connected it to a thermwrap to regulate temperatures for my wort. All was working swell until I made a slight tweak in the code, and commented out the section that ...
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1answer
354 views

How long to refrigerate yeast starter before pitching into wort?

When I brewed last night, my yeast starter had been in the refrigerator for 24 hours and it had "a lot" of yeast settled to the bottom. I am brewing tonight, and my yeast starter has only been in the ...
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1answer
113 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 ...
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2answers
57 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 ...
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4answers
227 views

What's a good session beer to serve cold?

I made an ordinary bitter a while back and it really brought to light why it's served at cellar temperature. At 55F, it was a bit malty, with nice hops. At 45F, it was like seltzer. Very drinkable, ...
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73 views

Is it important to reach pitch temps quickly?

I have seen lots of posts where guys say they stayed up late because their wort hadn't reached pitch temp until 4am or somethinglike that. What is the harm in just going to bed at 1 or 2, waking up ...
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705 views

Would placing the fermenter tank in a tub of water be a good way to handle hot environments?

Summers where I live typically have 80F nights and it can easily pick up to 95 degrees during the day. I have a plastic trash can (which I bought for this purpose) that I have filled up with water. ...
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3answers
955 views

Can I increase secondary fermentation temperature after a week?

My ale batch (US-05) was fermented at 68ºF for 11 days, when I removed the sediment and moved it to a Secondary Fermentation with a much lower temperature (41ºF) for a week now. Since yeast has to be ...
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2answers
559 views

Pitched yeast at 40 deg F. Too cold?

I pitched the yeast at 40°F. Was it way too cold and should I re-pitch?
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299 views

Lagering (Secondary to Bottling to Lagering)

So I recently bottled a pilsner recipe after a drop from 1.061 to 1.011 specific gravity (over 6% ABV potential), and my recipe instructions called for 7-10 days at room temperature (since they've ...
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1answer
107 views

Why Does a Heater in a Swamp Cooler Require a Pump to Distribute the Heated Liquid?

I am facing my first winter of brewing with a swamp cooler. I need to acquire a few aquarium heaters (incidentally, please let me know if you know a good brand) and drop them in my swamp cooler to ...
4
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4answers
274 views

Can forced air be used effectively to cool a second chamber from a keezer?

Would it be possible and effective, without causing undue stress to the keezer, to temperature control a second insulated chamber? I would like to be able to control fermentation temps and/or run ...
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2k views

Does temperature during bottle conditioning effect the flavour?

I made a Weis beer and my primary fermentation temp was 19C. After 2 weeks I mixed priming sugar into my beer and bottled it. I then conditioned the bottles for a week at 21C. I know when in primary ...
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1answer
124 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 ...
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2answers
129 views

Washing yeast from a brew that was pitched too warm?

I wasn't able to cool down the wort well enough and pitched WLP001 at 85 degF (I know, what a failure...) My home is 82 degrees indoors and the water comes out of the faucet at that temp too. Ran out ...
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188 views

Why are Swings in Temperature Bad?

I started brewing back in may, at the beginning of a Californian summer. I quickly learned that the swamp cooler was necessary to prevent unwanted ester formation due to a too-high of temperature for ...
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268 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 ...
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1answer
226 views

How Much (and How Fast) of a Drop in Temperature can (Ale) Yeast Tolerate? (And Preliminary Results from My Experiment)

I have rigged up a Raspberry Pi with some DS18B20 temperature probes that measure both the water in the swamp cooler and the beer directly and store the results in a MySQL database. I brewed a new ...
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2answers
2k views

Do I need to adjust for temperature with a refractometer?

Sorry for the simplicity of the question, but I asked Google and she didn't know. Stackexchange is my next stop. I took a brix reading of my steam beer wort at 13 brix (~1.052 SG), but it was ...
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3answers
657 views

Is a yeast-starter without temperature control worse than no yeast-starter at all?

EDIT: Crap, it appears I mislead myself. Northern Brewer includes a temperature range of the particular Wyeast you are using, and I assumed this temperature range factored out off-flavors. I read on ...
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4answers
1k views

How Should I Place a Digital Thermometer into My Fermentation Chamber and Keep it Airtight?

I have a setup with a raspberry pi and two DS18B20 digital thermometers that measure the temperature of the ambient air and the water in a swamp cooler that I place my fermentation chamber in. I was ...
4
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4answers
970 views

Networked/Connected Thermometer for Measuring Water in Swamp Cooler

I was hoping to put together an information system that could measure the temperature of the water in a bucket where I place my fermenting-bucket and notify my smart phone when I need to replace the ...
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3answers
2k views

What's the best/safest way to handle likely bottle bombs?

I'm using 16oz amber e-z cap bottles (swing tops). I've read that they'll self-vent before exploding, but I've heard other accounts of them actually exploding. I'm storing them like this and it's ...
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3answers
297 views

Too much sweetness and banana like aroma/taste

I've been brewing 6 batches of Ale and I've had problems with sweetness and banana like aroma and taste (esters probably). I think the problem is the fermentation temperature. My fermentation bucket ...
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1answer
64 views

“Quiescence Yeast” Or will my yeast-to-be survive a travel to the caribbean?

This is a related question, but not a usefull one to me :( I intend to buy liquid yeast from northenbrewer (WLP099 in case you wonder) and I currently live in Venezuela, a very hot and sunny place ...
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1answer
84 views

Isinglass and temperature

The wine kit that I am making uses isinglass for fining and recommends storing the wine at 70 degrees during the process. In the past I've used gelatin in my beers to clear and I know that it works ...
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123 views

How much heat can a demijohn take?

I'm planning to serve some homemade cider, hot and mulled at a market stall in the coming weeks. I'll be siphoning out of a 23L demijohn (like this: ...
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2answers
190 views

should I/how do I account for temperature differences for gravity readings?

I've taken my OG at the start, and another reading last night. Only last night did I register that my OG seemed slightly low according to what the brew can suggested as typical. My OG was 1.037 (can ...
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1answer
255 views

Should I extend boil times if temperature drops?

I use an electric burner when I home brew. It doesn't have a ton of excess power but it can get a nice rolling boil going. Occasionally, when I add malt extract to my kettle the temperature drops ...
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2answers
667 views

Yeast pitching and wort cooling

I'm making an American Brown Ale and added liquid yeast to the wort that may have been too hot. The yeast was in the fridge and out to cool for 45 minutes. My guess is: Wort temp: 26-27C or about 80F ...
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1answer
787 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 ...