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

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How do lager kits let you brew at room temperature?

I am thinking about making some Mexican-style lager using one of the following kits: Coopers Mexican Cerveza Bulldog Beer Kit - Cortez Gold Mexican Cerveza Better Brew Bandit, Tequila and lime Now ...
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9answers
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Is it OK to starting fermentation while wort is still warm?

I'm just getting started, so in my first couple batches I realized I had a problem cooling the wort all the way down to 60°F/16°C recommended by my instructions. I boil all of my water, but I don't ...
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1answer
50 views

What happens if fermentation happens at wrong temperature?

What will happen with my beer if fermentation takes place either at a too hot or too cold temperature? What will be the effects on the flavour?
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1answer
61 views

Why are some of my batches too sweet in the bottle, and can I rescue them?

I've had pretty good success brewing kits generally, but towards the end of last year I went on a mission brewing a few batches in fairly rapid succession. Unfortunately for me, most of the resultant ...
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1answer
32 views

What effect does room temp have on the cider fermentation process?

I'm new to the site. Been making cider for a couple of years now and still don't feel like I have it down. My latest batch, a recipe I've made many times, is not clearing like it usually does. It got ...
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2answers
121 views

Is anyone aware of a mini refrigerator model with a flat bottom for use as fermentation chamber?

Searching like crazy to find a mini refrigerator with a flat bottom. Any model will work, as I am new to this and only brewing 1 gallon batches. Ideally it would hold a 5gal carboy so that I do not ...
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5answers
7k views

Mashing at too High of a Temperature

I did my first all grain batch last night and went way over the desired 150s range on the temperature of my mash. It ended up being around 170f. What effects will there be from mashing at 170 (or ...
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2answers
72 views

Keep Homebrew Fresh

Just syphoned a youngs 30 bottle kit into a plastic 5 gallon fermenter. How should I store this to stop it going bad? What's the highest temperature it can be stored at safely? and how can I ensure ...
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2answers
372 views

How to Calculate Priming Sugar while Bottling Lagers?

Primary Fermentation: 50*F/10*C 2 weeks Diacetyl Rest: 65*F/18.3*C 2 weeks Lager: 31*F/-0.5*C 4 weeks I am reading contradictory information regarding the amount ...
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1answer
111 views

Soapy aftertaste in wine, fermentation temperature?

I generally find my homebrew wine (just from a regular kit) has a soapy kind of aftertaste. I'm wondering if this might be down to fermentation temperature or something, I'm taking as many precautions ...
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2answers
131 views

Ale yeast at cold temps?

I made a modified Oktoberfest 11 days ago. I used an ale yeast to cut down on the time. I let it ferment at 68 degrees Fahrenheit for 4 days, then decided to put it in the fridge at 50 degrees. I ...
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2answers
72 views

Fermentation temperature control [duplicate]

I have an old refrigerator that I use as a fermentation chamber for my beer. It can hold two fermentation buckets. It is connected to a STC-1000 temperature controller so it keeps the temperature ...
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2answers
158 views

What are the effects of storing unboiled All-Grain Wort at sub-lager temperatures?

Obviously it is better to immediately boil the wort when it is freshest, giving any wild yeist or bacteria as little time as possible to grow and contaminate the product. It is also a well ...
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6answers
2k 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
90 views

Where should I take the temperature while cooling wort?

Extract brewing here: After the boil, I put my pot into an ice bath to cool the wort before topping off. Generally I cool the wort to 100°F before transferring to the fermenter. Today I cooled to ...
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1answer
73 views

Heating after fermentation?

What's the general consensus on leaving a heat source turned on after fermentation has complete? I'm doing an Imperial IPA which should finish fermenting in 4-5 days going by previous experience with ...
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1answer
82 views

Fermentation Temperature

I have a quick question. I've been looking for an answer, but didn't find a clear answer. So, I'm making an IPA. Right now the air temperature in my closet where I keep the carboy is 67-68F. This is ...
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2answers
204 views

Why every brew has a bitter malty aftertaste?

Every of 5 previous brews (lager, pilsner, pale ale, IPA) have had a somewhat bitter and malty aftertaste to them. It's not too off-putting (except the lager) but is clearly there, yet not present on ...
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1answer
91 views

Is there a formula to determine at which temperature a given volume of beer at a given ABV will freeze?

I was hoping that someone had worked out a formula to determine at which temperature a given volume of beer, at a given ABV, for a given length of time, will freeze? I'm doing my first 6 lagers and ...
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4answers
6k 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
73 views

Second Fermentation In Water Bath

The room I use for fermenting is rather cold currently at around 8 degrees C, I had the idea to use a aquarium heater in a box of water to keep the temp around my bottles around 18 degrees, my ...
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1answer
136 views

Mash-out and batch sparging

Brewing all grain, my mash tun can't hold my full sparge volume. So I step it, a few gallons at a time. I've read that the sparge water should be 170 F to stop the enzyme reaction. But when stepping ...
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1answer
142 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 ...
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1answer
104 views

bottle conditioning ale below room temperature

After bottling my batch of Porter, I forgot it need to be conditioned at room temperature. I left it in my garage for almost a week at 45-50°. When I realized what I had done, I moved it inside the ...
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1answer
270 views

Best temperature to store carboy after fermentation is complete?

I've got a porter and a stout, both sitting in carboys and both have reached their desired FG reading. However, I'm not able to keg them for another 2-3 weeks because I'm still waiting on a CO2 ...
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3answers
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Secondary Fermenter Temperature — Colder?

My American Pale Ale has been fermenting away nicely for the past few days and I'm certain I'll be racking to secondary within a few days (after SG gets stable). I'm curious: I've been keeping my ...
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1answer
83 views

Temperature Control Issues

I'm testing out a brand new 200L system and found a couple of potentially disastrous but potentially easy-to-fix issues: 1) While mashing the temperature indicated on the thermometer which sits near ...
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333 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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3answers
5k 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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2answers
97 views

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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6answers
2k 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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1answer
428 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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1k 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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2answers
134 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
374 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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3answers
2k 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
337 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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96 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
78 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
2k 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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3answers
865 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
782 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
809 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
4k 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 ...
3
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4answers
2k 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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2answers
80 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
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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
1k 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
189 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
86 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 ...