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

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Stuck Ferm? Celebration Ale Clone Gravity at 1.021

Celebration Ale Clone (extract kit) White Labs California Ale Yeast (liquid vial, no starter, I know next time I'll make a starter) Pitched at 68 degrees and good activity 18 hours later, got up to 71 ...
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1answer
47 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.
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What are the characteristics of a fusely beer? [duplicate]

I have heard that too warm a fermentation createds "fusely" beer. What are they and how can I tell if I have this problem?
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80 views

Which temperature do I ferment at: the recipe's temp or the yeast's recommended temp?

So, I'm trying to brew a Mexican lager today. What I've done is taken Palmer's Cold But Not Baroque recipe and tweaked it a bit. However, instead of using Bohemian lager yeast, as the recipe calls ...
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1answer
73 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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71 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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600 views

Waiting to pitch yeast?

I came across a couple similar questions, but not exactly what I was looking for. I only have a short period where I have time to brew, but my starter isn't ready and some cooling equipment. Are ...
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1answer
80 views

WLP036 (Düsseldorf Alt) and cool temperatures

I am fermenting an alt in my cellar using WLP036 (Düsseldorf Alt). Pitched a 2 litre starter into 21 litre 1.051 wort. Fermentation was extremely vigorous at 16 C ambient temperature for 36 hours, ...
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905 views

Beer fermenting too cold?

My first brew is currently fermenting on its 6th day. I just checked the temperature and it was quite a bit lower than what I initially thought. The temperature in the room is 12'C (54'F) and the brew ...
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27 views

Is there a way to estimate the actual temperature where the yeast ferments without having a sensor inside the carboy? [duplicate]

I was reading an article on fermentation temperature control where it says, However, since yeast growth and fermentations are exothermic and therefore generate heat, figure that the temperature ...
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254 views

Change the temperature from fermentation to aging?

I used to allow for primary fermentation, then rack the beer out of the primary fermentor and than let it 'age' in secondary for about 2 weeks. At that point I used to move the beer from room temp ...
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170 views

DIY BrewBug based offerings?

BrewBug, is a neat little toy that essentially has a "floating bob" that measures the temperature and specific gravity of the wort as it is fermenting, allowing for niceties like changing the ...