The technique of leaving beer in the fermentor after fermentation has finished in order for suspended yeast to remove diacetyl "butterscotch flavors" from the brew.

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160 views

Will yeast clean up diacetyl generated in a sour mash?

I have a sour mash that is going on 48 hours, and I'm hoping to press it closer to 72 as I like my sours bitter enough to strip the enamel off my teeth. Problem is by 24 hours (last night), I went to ...
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1answer
139 views

black lager and diacetyl rest

I am doing a black lager and was wanting to do a rest. I read the instructions wrong and placed it in the secondary. Is it too late to do the rest? Is the new added oxygen going to actually make it ...
3
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2answers
582 views

Wyeast 2124 Bohemian Lager for Bock - too late for diacetyl rest?

I really wasn't ready to do a lager, but I wanted to do a Bock, so I requested California Lager yeast. My supplier failed to make the substitution and sent me home with Wyeast 2124 Bohemian Lager. I ...
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2answers
626 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 ...
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1answer
2k views

How to tell if (and recover from) a diacetyl rest was done too early?

I've got a lager (Wyeast 2206) that I've just taken out of primary fermentation (at ~8C, for 10 days) for a diacetyl rest (at ~20C). I picked the time to do it based on "How To Brew" suggesting I ...
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1answer
273 views

Accidental steam beer, temp control and diacetyl

I brewed a 16-gallon batch of my Lawnmower Lager, popped it into my Brewhemoth and inoculated it with 3 packets of Saflager S-23. My chilling solution isn't working as well as I'd hoped, and it's ...
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2answers
464 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 ...
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2answers
877 views

Combating Diacetyl

I've just finished my first brew (brown ale), and the results aren't quite as spectacular as I had hoped. The issue is a prominent, yet not overpowering, sweet almost caramel-like flavor. As best I ...
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2answers
552 views

When should I do a Diacetyl rest (Wyeast 1187)?

I'm assuming that this should be done before racking when "primary fermentation" is complete? I suppose I have another question then too. Is there any way to estimate what the FG should be based on ...
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1answer
240 views

What is considered to be a reasonable temperature rate change in a HERMS or RIMS system?

When brewers speak of their mashing techniques using mash temperature controlling technology, they sometimes make claims as to how fast they can get their mash from temperature 'A' to temperature 'B', ...
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2answers
1k views

What does “a thorough diacetyl rest” mean when talking about ale yeast?

Most of my knowledge of diactyl rests come from Palmer's How to Brew, and it applies entirely to lagers. It mainly means bringing the temperature up slowly and letting the lager sit at a slightly ...
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Diacetyl Rest for Wyeast 2206 Bavarian Lager

The Wyeast website seems to strongly suggest a diacetyl as fermentation completes with their Bavarian Lager strain, 2206. I prefer to chill my wort to below fermentation temps prior to pitching the ...
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2answers
326 views

What is the impact of a second d-rest after 3 weeks of lagering?

We have brewed a number of ales, but recently tried our hand at a pilsner. After 8 days of fermenting at around 52 degrees F, we brought the pilsner up for a 2-day diacetyl rest at around 68 degrees. ...
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2answers
335 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
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2answers
359 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 ...
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1answer
246 views

Small Space & Apartment Brewing: Diacetyl Rest

When brewing a lager in an apartment, you will most probably use a small refrigerator for the lagering process. If the refrigerator does not allow you to choose the exact temperature, but instead you ...