Yeasts are micro-organisms used in brewing to produce alcohol during the process of fermentation.

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Optimum Fermentation Temperature

I am planning on brewing a wheat beer with Danstar Munich Wheat Beer Dry Yeast. I didn't realize until I had already made the purchase that the optimum temperature for fermentation was 55-65. I don't ...
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What yeast for carbonating a lager?

We brewed a Dark Lager using Wyeast 2007. It fermented for two weeks and has been lagering for 3. When we bottle, we think we'll need to repitch to ensure the bottles carbonate. Thoughts on what ...
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Which is better: old yeast from the primary fermentation or reused yeast from primary fermentation?

It's known that reuse yeast from early stages is better. But during the fermentation the reused yeast multiplies itself, producing newer cells. Said that, I'd like to know if it's better to use yeast ...
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32 views

Wine fermentation without yeast?

Apologies if this is a duplicate - wasn't able to find anything similar. Making a 3gal batch of strawberry wine. Poured sugar-water over fruit and set aside to cool. Been having problems with bugs ...
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How can I get more consistent carbonation in bottles?

Some of my bottles usually turn out over carbonated, and some turn out under carbonated. Is there a good technique to get consistent carbonation? I imagine it is a function of both evenly distributed ...
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Why doesn't the Brulosopher Quick Lager Method produce esters and other off flavors?

I'm brewing 6 lagers right now (all Wyeast 2206) according to the Brülosopher Fast Lager Method. Essentially, it involves fermenting at normal lager fermentation temperatures until it is 50% ...
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Any way to Flavour a Cider crafted with Baking yeast? [duplicate]

I'm very new to brewing, and I'm making a couple test batches of cider as we speak. However my accessibility to things like wine or champagne yeast, so i'm stuck with baking yeast. My question is ...
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putting the fizz back into beer

I'm hopping you guys can help me with this one. I want to fill a 2lt coke bottle with beer from bottles and add sugar and yeast to put the CO2 back in so it will last 8 to 10 days plus. I'm after ...
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Closed environment vs open environment in brewing

One thing that is very confusing for me right now is the dynamics of when to isolate the contents and when to aerate it. Like as soon as you finish boiling it's recommended to put a lot of oxygen by ...
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Does a different cell count invalidate a tasting expeeriment between two batches, or is it immaterial?

Now that I'm all grain I've done many experiments regarding differences in grains, trying to make 2 batches identical in every way except for one variable with the grain. However I just learned via ...
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96 views

Should yeast be washed or just stored in the beer?

The answer to this question suggests yeast shouldn't be washed, is that really the current consensus? what if I'm brewing a different style? Won't the trub affect taste? Lots of hop residue there. ...
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How much recycled yeast to use?

Morning all, I am just getting into re-using my yeast and have a question. I wash it as per the YouTube advice that I found (haha) and it seems to store pretty well so far. I have tried it in one ...
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wlp565 minimum time to bottle condition?

I'm fully prepped for wlp565 to stall out, but this question is about bottle conditioning with wlp565. what have been your minimum conditioning times to hit your desired CO2 level using wlp565? ...
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57 views

What can have caused my mead to have the taste of yeast?

I brew my first mead one month ago. I've put 1 dose of honey for about 3.5 of water. Ended up with a 2 liters of must in a pet bottle. I've put 10 grams of yeast (the entire sachet). Since i started, ...
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111 views

How long does a white labs liquid yeast vial last once opened?

I have been using half of a vial of white labs liquid yeast for brewing 1 gallon batches of beer. How long will the second half last once I put it back in the frige? It had been allowed to warm ...
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71 views

Yeast nutrients

I've seen several beer, mead, and wine recipes that call for yeast nutrients. I'm even now following a mead recipe that calls for staggered nutrients. But my question is, what exactly are yeast ...
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54 views

Tannins and yeast

On this page it is claimed that wine yeast needs some tannins to work, and that this can be a cause of stuck ferments in, say, flower wines. I have never heard of this, and cannot seem to find a good ...
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57 views

websites that describe yeast flavors?

changing the yeast is the easiest way to experiment with a recipe. I have my first brew about a week away from bottling. so what's next? there are a ton of websites out there, and I could use a good ...
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Starter quantity w/ Mr. Malty Calculator

I have an imperial stout that seems to have slowed fermentation ~ 1.040. I made a 2L starter w/ Super San Diego yeast on stir plate and pitched it at high krausen.. no decanting. Based on Mr. Malty's ...
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Over-pitched yeast- how to avoid autolysis?

I am doing my first batch with a yeast starter. I harvested yeast from a commercial Belgian trappist ale, built it up for a couple of days, cold-crashed it, decanted off the majority of the mini-wort ...
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Not seeing fermentation on lager's primary fermentation

We're currently trying to get a lager to go through its primary fermentation but after 2 days, we haven't seen any action or changes on the surface of the wort. The wort had a full packet of yeast ...
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Fermentation Done After 2 Days?

So this is a weird one. 3 weeks ago I made an Xmas beer. I brewed it, pitched the #2 yeast, and put the carboy in my cold dark room (about 70 F) to ferment. The fermentation and krausen began about ...
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Homebrew sitting on top of washing machine - agitation

My fermentation bucket is on top of my washing machine, when it spins it vibrates the brew. I've been careful to clamp it to the back of the washing machine with a bungee otherwise it might shake ...
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When will fermentation end? ( wine )

I made 10 litres of red wine ( pasteurized grape juice from the supermarket ), added 2kg sugar, used yeast bought from my local homebrew shop. Fermentation started after a day, and for the first two ...
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Stuck fermentation - how long to leave it for?

Porter, sitting at a steady 22 degrees, should be 5.2% abv, fermentation stopped at 2.5% A stir took it to 3.5% over a week. Added yeast, and nutrient, no sign of further fermentation 2 days on. ...
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First homebrew batch very sweet

I recently made my first home brew batch using an off the shelf starter kit (English brown ale). The beer is much sweeter than I was expecting and the alcohol content is ~3-3.5% (should be 4.5%). Am ...
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143 views

Yeast Starter Benefits

What exactly are the benefits and just how significant are they of making a yeast starter as opposed to throwing in the yeast as per most beer kit instructions?
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Basic yeast questions

I've been researching online for months now in preparation for my first brew but there are still questions to which I can find no answers. Is yeast either dead or alive, i.e. works 100% or not at ...
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192 views

Slow Fermentation in cider

Two weeks ago I started 2 gallons of hard cider from windfalls - washed and bruises cut out. I pasteurized my own apple juice, kept it below boil. No preservatives. Everything was santitized with ...
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Best yeast for Mead

I have been making mead for close to 5 years now. I do my mead a little different than most. I use Safale US-05 dry ale yeast. I let it ferment for 3 weeks then I transfer out of the fermenting ...
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What yeast is in White Labs WLP080 Cream Ale Blend?

Has anyone used the Cream Ale blend from WhiteLabs? I used it recently and am surprised at the lack of flocculation. The beer has been in a cold keg for a month and its still fairly cloudy. Was ...
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anyone know where good tutorials are for starting to brew lager

I am currently brewing my own beer and its going good. For my next batch I want to make something like a Coors Light or even something that tastes like Fosters or Carlsberg. If anyone could help it ...
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Why were we able to make alcohol with little cleanliness and no sanitizer? [closed]

When I was younger I lived in Missouri for a bit and I met a guy who ended up having me help him make "shine" (that's what he called it) in the woods fairly often - I guess you could say that I was ...
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63 views

No pressure in secondary

I have a problem with an ale kit I've brewed and kegged. I have done primary with a s04 yeast and its been in secondary for about 5 days and I've checked it this morning and its not built up pressure. ...
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What is the smell from growing beer yeast and is there any adverse effects from the odor/fumes

What are the fumes from growing beer yeast and is there any adverse toxic problems?
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Making Hard Cider in a Dorm

So I am attempting to make my own hard cider. At my school, there is a farmers market every Thursday and at this market they sell flash pasteurized cider; the process is stopped partway through so it ...
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236 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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Can you help me read this complex Yeast recipe? (Sour Beer help)

I'm reading a recipe for a Sanctification clone, which is one of Russian Rivers Blonde Sour Ales. The recipe for the yeast read as such Brettanomyces bruxellensis culture, Wyeast 3112 or White Labs ...
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Brewing with Saccharomyces boulardii

I have a friend who studies some molecular aspects of probiotic yeasts, some wild ones and also the widespread in medications Saccharomyces boulardii (found in Florastor®, Floratil®, and other ...
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did i put too much yeast in?

this is the beer i made ingredients: 17 litres spring water 1 can of coopers Australian pale ale i think it was 1.7 kg normal size 500 grams malt extract coopers brew enhancer 1 which is 250 grams ...
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Pure Carapils starter wort?

I was reading White Labs' Homebrew Starter Tips page, and the following got me thinking: Keeping the Original Gravity low is important because you want to keep the yeast in its growth phase, ...
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658 views

Why does WLP002 sometimes attenuate more?

So I am brewing lots of bitters using WLP002. Typically, I mash a grist with around 10-15% specialty malts at 66 C and ferment at 20 C. (I use BIAB and dunk sparging.) The typical situation is that ...
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Is it okay to freeze dry yeast at around -20 °C?

After adding a sachet of 71B yeast to a 50ml starter at about 40 °C, I've noticed absolutely no activity. The yeast sunk to the bottom of the container and just stayed there. This is the first time I ...
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Should I pitch a second round of yeast?

I brewed a Dogfish Punkn clone that was rather heavy on the sediment. I pitched a pretty healthy yeast starter that was working for 30 hours before being pitched probably around 80 degrees, perhaps ...
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Why toss the starter wort?

I've wondered about this for a while: most 'how to make a yeast starter' instructions I've seen suggest using only the yeast-rich sludge, and tossing most of the starter medium. This makes sense if ...
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312 views

First time brewing lager, no fermentation

I set up a new fermentation chamber and was keen to try my hand at a lager. Unfortunately now 5 days on there hasn't been any fermentation so I think I may have shocked the yeast with the cold or just ...
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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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Too little sugar?

It's my first time making cider and I believe I didn't put enough sugar in it. I put 1 1/2 brown sugar (Even though some fell off to the side cause I didn't dissolve it, like the twit I am). I would ...
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Will a yeast that ferments at higher temps stop fusels?

I have trouble with controlling temps and do not have much room for my growing collection of fermentation bins but I'm trying the swamp cooler for my 5L DemiJohn white wine kit. I'm gonna get some new ...
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Are Yeast Nutrients actually necessary for brewing Beer?

I typically bought Yeast Nutrients from Northern Brewer for my yeast starters and extracts. I went to my LHBS today to purchase some DME for an extract and asked for nutrients for the beers that I ...