Tagged Questions

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

learn more… | top users | synonyms

1
vote
2answers
664 views

Can I use liquid nitrogen to cool my wort?

Basically what the title says. I'd like to switch to all grain at some point but the volume of water required to cool a decent sized wort down scares me. Assuming I have access to liquid nitrogen, ...
1
vote
2answers
230 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. ...
2
votes
3answers
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 ...
2
votes
2answers
582 views

Does keg secondary fermentation temperature matter?

I'm considering investing in a keg, fridge, etc. I live in a warm climate and currently do secondary fermentation in the bottles in the heat. I've read that people have chest freezers to store kegs. ...
4
votes
2answers
257 views

Effect of decreasing mash temp?

Let's say I mash in at 65 C and over an hour it drops to 60 C - will this have a detrimental effect on my brew?
4
votes
2answers
1k views

Is this a stuck fermentation or did I screw up the mash?

So, a little under a week ago, I brewed a goodly sized stout (1.069 OG) and when I mashed it I ended up missing my mash temp by about 4 degrees. (I was aiming for 158 and ended up with about 162-163.) ...
7
votes
1answer
2k views

Can I bottle condition / carbonate my Hefeweizen at “room” temperature (74-78 degrees)?

My first brew is almost ready for bottling. Winter is pretty much non-existent where I live, so "room temperature" is typically between 74°F and 78°F (23°c to 26°c). I was planning to leave the ...
2
votes
1answer
331 views

How quickly do I let the fermentation temperature rise if it starts off too low?

I brewed something like a Black IPA today (hoppy and dark). I ferment in carboys in a chest freezer with an external temperature control. It is frigid today, and the garage where the chest freezer ...
1
vote
1answer
531 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 ...
1
vote
3answers
137 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
3answers
692 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 ...
2
votes
4answers
208 views

Over temp when steeping an all grain

I started my steep at about 175 and wans't concerned but when i put the lid on the vessel to keep it constant it shot up. In the end my grains steeped at about 190 for 40 min. This is a pumpkin ale ...
6
votes
2answers
4k views

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 ...
5
votes
1answer
202 views

How long should I keep a lambic at fermentation temperature?

Normally I ferment beer in my basement, which varies in temperature from 50-70 degrees, depending on the season. These temperature swings can be bad for fermentation, especially in winter. So when I ...
11
votes
4answers
1k 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 ...
11
votes
3answers
803 views

How long do I need to maintain my fermentation temperature?

Do I need to maintain my desired temperature until bottling or take it out of the "ferm chamber" after initial fermentation is done? What about with long term brews such as sours?
7
votes
1answer
327 views

Can a wort be cooled too much?

When chilling the wort after a boil, if it falls below the yeast's operating temperature, should I wait until the temperature comes back up before adding the yeast? I typically chill my wort with a ...
6
votes
3answers
468 views

Hydrometer Temperature Limit

I am about to do my first all-grain batch. After (batch) sparging is it safe to drop the hydrometer right in or do I need to let the wort cool to a specific temperature first? I realize I will have to ...
3
votes
4answers
843 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 ...
8
votes
2answers
547 views

Is it okay to store cold beer at room temps after conditioning?

I brewed a nice batch of Black Cherry Ale, which has been bottle conditioning at 35F for about 5 weeks. I will need space in the fridge for a keg of Summer Ale in about two weeks. My basement temps ...
3
votes
3answers
250 views

Any difference between lagering dubbel at 36F versus 45-50F?

I have a Belgian Dubbel bottle conditioning, the recipe for which came from Brewing Classic Styles. For this recipe, Jamil says to carbonate the beer, then lager for one month at 45-50F. I have the ...
3
votes
3answers
9k views

Temperature correction for specific gravity

If I want to convert my specific gravity reading from one temperature to an equivalent specific gravity at 60F how do I do it? Can you give me a correction factor for this case?
4
votes
2answers
338 views

Has anyone ever had problems with a 2 day diacetyl rest at room temperature?

Say 70 - 74°­F (21 - 24°C) I normally do what the books say and rest somewhere in the 60s but this means brining my fermentation freezer up to that temperature. I am mostly an Ale brewer so normally ...
3
votes
2answers
364 views

Does the length of a diacetyl rest matter?

Does a diacetyl rest for a week or more adversely affect the beer in any way? With our busy lives it's easy to forget about a batch for a few days (especially when it's in the dark recesses of a ...
16
votes
6answers
15k views

What happens when beer freezes?

After a bit of trouble with a thermostat on a 2nd hand fridge, I discovered that my latest batch of bottled, ready-to-drink brew had frozen. What happens to beer when it freezes? Will the taste be ...
4
votes
2answers
386 views

Is RTD beer susceptible to any damage from temperature fluctuations?

I've got a fridge set up in my garage loaded full of delicious home brew, all ready to drink. To save on power, I'd like to only turn it on when I need it, say once a week or once a fortnight. Could ...
4
votes
2answers
827 views

Brewing at Altitude

How does high altitude affect brewing chemistry? Up here in Denver (5280') or even higher in the mountains (some towns in Colorado are 9000' and higher), water does different things. In Denver, water ...
3
votes
4answers
4k 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 ...
4
votes
4answers
1k views

Calculating Amout and Temperature of Water For Mashing

how do you calculate the correct amount and temperature of water and to offset the amount and temperature of the grains? Perhaps there is a formula or rule of thumb that I am missing.
4
votes
2answers
1k views

What is the effect of temperature on dry hopping?

How does the temperature at which you do dry hopping effect the aroma of the beer? Is there any effect?
5
votes
2answers
484 views

Should I brew in too-warm climate or substitute the yeast?

I'm about to brew an Amber Ale (from an LHBS kit) that comes with a US-05 Safale yeast. The forecasted temperature for the next couple of weeks is likely to remain at min 20C (68F) overnight & ...
4
votes
1answer
432 views

Lager Bottling Temperature

I've got a lager that's been in my garage for the last month (generally hovering between 30 and 36F), and I saw a question relating to temperatures for bottle conditioning a lager, but I'm wondering ...
2
votes
3answers
1k 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 ...
3
votes
4answers
2k views

Temperature swing of 10+ degrees during fermentation

I'm fermenting a porter, and pitched the yeast at about 75 on Sunday night (4 days ago). Lively fermentation started the next day, and though the wort had cooled to about 68 the first night, the ...
9
votes
3answers
2k views

High-gravity beer stored too cold to carbonate during bottle conditioning. How can I carbonate this beer?

I made a strong scotch ale. Bottled it up, 2 weeks later no carbonation. Is there a way to save this batch? OG 1.095, Used Safale US-05, 2 weeks in primary, 6 weeks in secondary, FG 1.030, I ...
3
votes
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 ...
5
votes
3answers
999 views

How do you insulate a cooler based mash tun?

I have a Coleman 70 Quart Xtreme cooler that I've modified for my mash tun. I seem to be losing a lot of heat out the top. Are there any good ways to insulate it to help prevent heat loss?
14
votes
4answers
810 views

How do you cool wort?

More specifically, what methods exist to cool your wort after the boil, and what are there respective pros/cons?
5
votes
3answers
638 views

Can I put a secondary fermenter in room temperature without creating any off flavors?

I would like to have more brewing capacity, but I am limited by the amount of temperature controlled storage that I have. Do you only need temp control in the primary fermentation process? I'm ...
6
votes
1answer
677 views

What is the recommended serving temperature for each beer style?

I just finished a kegerator build, complete with a custom thermostat so I can set the temperature to the degree. Now the question is: What temperature range is best for each beer style?
13
votes
7answers
8k views

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 ...
4
votes
6answers
610 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 ...
2
votes
1answer
257 views

Kegging at basement temperature

I am a novice at kegging. I don't have room for a kegerator or chest freezer so I simply keg at basement temperature. My basement is currently 69 F and I've had 5 gallons of tripel on pressure for 3 ...
2
votes
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, ...
2
votes
1answer
434 views

What temp for a secondary maturation?

My first Irish Red Ale is at the secondary fermentation for about a week, I want to put the secondary fermenter to maturate on a refrigerator (with digital control for temp) for one more week before ...
6
votes
2answers
218 views

Homebrewing: Decoction Mashing

Many beers, especially German, are produced with a method called decoction mash. In that, the rising of mash temperature is achieved each time by talking a portion of the MASH, boiling it, and adding ...
1
vote
2answers
541 views

What's the minimum mash time?

Listening to an episode of Basic Brewing last night, I heard a guest say that most of the conversion in the mash happens in the first half, and that the mash can thus be cut down as short at 45 ...
4
votes
2answers
322 views

Temperature conditions for saving cropped yeast?

What is an ideal environment for saving yeast I have harvested from my fermentation vessels? The lowest survivable temperature? Highest? I recently found the top of my fridge to be too cold when I ...
2
votes
2answers
4k views

Ale bottle conditioning temperature

For bottom-fermented beers the conditioning/storage temperature is crucial and supposed to be really low (32F / 0C). Is this the same for top-fermented beers or is conditioning / storage at higher ...
9
votes
2answers
4k views

What is a whirlpool chiller?

What is a Whirlpool Chiller and how does it work? What are the advantages or disadvantages?