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

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Heat and yeasty flavors

I've used safbrew T-58 a couple of times over the last year and had both great batches and very yeasty-tasting batches. Could the heat be the reason for the yeasty taste? A warm day in the Israeli ...
7
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2answers
842 views

WYeast got warm on the way home. Can I still use it?

I bought two packs of the American Ale Propogator yesterday, but then took a bit longer than planned to get home and the packs got warm and were swelled a bit. I put them in the fridge as soon as I ...
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5answers
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Long cooling before pitching

Summer brewing means warmer tap water, which means that my immersion chiller can only cool the wort to about 75 degrees. I typically cool the wort to 68 degrees before pitching. I have a ...
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6answers
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Can I heat a starter in an erlenmeyer flask on an electric stove?

My dad found an old Kimax (26500) 1000mL Erlenmeyer flask that has been in his attic for the last 30 or so years and gave it to me. I'd like to start using this to make starters, in conjunction with ...
8
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4answers
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What exactly is yeast-bite?

So I cracked open a nearly year-old bottle of oatmeal porter last night and it tasted a bit "yeasty". In fact, much more yeasty than I remember from a few months ago. I was fairly careful in my ...
8
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3answers
904 views

What would happen if I used a yeast meant for white wine to brew red wine or vice versa?

I was buying winemaking yeast and wondered - what exactly would happen if I used the stuff meant for red wines for white or the other way around? Would it be bad? Would it work at all? Would it just ...
6
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2answers
691 views

Choosing a yeast for ginger beer

I'm doing some experiments with ginger beer (this is a alcoholic beer, not a soda). I'm use brown sugar as the sugar source for now, but may experiment with other sugars including malt as I go along. ...
8
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2answers
411 views

At what point can a beer be called organic?

A lot of the homebrew I make is made with organic ingredients - organic grain and hops. However, I have never come across organic yeast (!?) or irish moss. Can I rightly call this beer organic, or ...
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2answers
406 views

Is re-pitching essential after cold crashing?

If I'm cold crashing a batch to clear it up, is it essential to re-pitch when bottling or will there be sufficient residual yeast for carbonation?
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6answers
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Is it possible to bottle condition without sediment?

I've recently been reading the labels a bit more on one of my favourite beers and have discovered that the brewers bottle condition their Pale Ale. Yet it's sold with no signs of any flocculated ...
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3answers
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How many times can yeast be reused?

A good yeast sample can be retrieved, stored & reused regularly across brews. Is there a limit to the number of generations a sample can last? I've heard that after so many generations a strain ...
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4answers
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Using trub directly vs. yeast rinsing.

Sometimes referred to as "yeast washing," the process of yeast rinsing separates the yeast from the hops and break material in the trub. Most brewers who reuse yeast — and store it for long ...
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3answers
505 views

wild yeast taking over?

I brewed a belgian triple last week. I had a starter going using white labs trapist yeast but it didn't take off, must have been a bad vial. In the meantime the batch was sitting in the carboy ...
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2answers
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Do commercial breweries stir in their fermenters to expose more yeast to the wort?

I noticed that ale yeasts, so called top-fermenting yeast, floats to the top. Does this mean that the yeast only works on the wort near the top of the fermenter? Assuming that no oxygen or bacteria ...
2
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2answers
324 views

Reusing yeast slurry after cold-crashing.

I let a lager sit for 10 weeks in a secondary until it was very clear (the cold helped with clarity), and then used the yeast slurry at the bottom as a starter for another batch. I usually make a ...
3
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2answers
295 views

Yeasty Tasting Pale Ale

This is already after the fact, since the batch has been consumed but... My pale ale that I made had quite a 'yeasty' taste. It still wasn't bad, though I would have preferred it to be a bit milder. ...
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1answer
299 views

End of Fermentation?

I emailed this to the Mr. Beer beermaster, but I figured I'd ask here as well. For my Doppelbock 7.0, this Sunday will make it 3 weeks in the keg for fermentation. The previous beer I made was a pale ...
2
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1answer
186 views

My latest batch of Must had half a dozen floating spots and low sediment, what happend?

Sequence of Events: March 21st - Boiled water and honey and placed in sanitized plastic bucket with airlock (containing sanitary solution: Iodophor). Bucket placed in basement to cool overnight. ...
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2answers
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What effect will doubling the yeast concentration have?

If I want to have a beer ferment in less time would doubling the amount of yeast I pitch help? Will there be any consequences of doing so? Does it matter if I make a starter for them both?
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4answers
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Dry Hop Filtering and bottling

This is my first attempt at dry hopping. I added hop pellets directly into the secondary fermenter. They have been in for 1 week and many have settled to the bottom, however there is quite a bit ...
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2answers
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What is the difference between yeast nutrient and yeast accelerator?

I know what yeast nutrient is, but was browsing around the brew supply and noticed yeast accelerator. Anyone know that the REAL difference (if any) is chemically? See it mentioned through a goggle ...
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2answers
350 views

Is it better to make yeast slants from a bottle after single stage fermentation or from the primary?

I am considering making some yeast slants to try to start a little bit of a yeast bank. In my research i have read about folks making a starter from the yeast in the bottom of a bottle conditioned ...
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2answers
845 views

Is a cider-like smell a bad sign in a culture of beer yeast?

I started culturing yeast from a La Fin Du Monde bottle about 3 days ago. I have since stepped it up to a 2L container about half full of wort. I have been very careful about sanitizing everything ...
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4answers
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Does yeast choice matter as much in ginger beer?

I'm about to brew a ginger beer and was wondering if the choice of yeast is as important in a ginger beer, where the ginger dominates the flavour. I've got the yeast-under-the-cap packet and a US-05 ...
3
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4answers
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Can I add more yeast during primary fermentation?

I've got a brew that's been on primary fermentation for 10 days and still haven't seen any activity in the airlock (again). Gravity has dropped from 1.040 to 1.014, but I'd still like to raise the ...
5
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2answers
462 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 & ...
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2answers
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Proper Way to Store Yeast

What is the proper way and temperature to store yeast?
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3answers
784 views

Wyeast 3944 Slow to Work

I wanted to see if anyone else had this experience - I'm on my second batch of a Wit bier with this yeast and have noticed that in both scenarios - after two weeks the Krausen has not fallen. The ...
3
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2answers
766 views

Why is some of my beer flat (half of the bottles in one of 2 batches done together)?

I brewed and subsequently bottled 2 batches of beer together, following much the same process for cleaning/sanitizing and brewing throughout. When bottling, I bulk primed both batches with a sugar ...
4
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1answer
415 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 ...
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3answers
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Brewed an Oatmeal Stout and the gravity did not drop as much as predicted, should I re-pitch or add yeast nutrients/energizer?

I just brewed an oatmeal stout see recipe details here and I have a question about missing Orignal and/or Final gravities. The OG was supposed to be 1.061 and the FG 1.016. I brewed and got an OG or ...
4
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1answer
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Does Champagne yeast really dry out a beer?

If you pitch champagne yeast into your wort from the start will it attenuate further than done with an appropriate pitch of standard american ale yeast (say WLP001)? I think people use champagne ...
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5answers
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Can I use wine yeast to ferment beer?

Can I use wine yeast to ferment a beer? What sort of problems might I encounter that are unique to wine yeast trying to ferment malt sugars? What sort of flavor differences might I encounter?
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4answers
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Whats the difference between yeast and bacteria?

I know that in a very general sense, yeast = good, bacteria = bad. But why is this? Do bacteria produce alcohol like yeast? Is yeast a subset of all bacteria, or vice versa?
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3answers
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Yeast Starter Steps

I want to make a yeast starter for a lager. I even went out and got a 3000 ml Erlenmyer Flask. According to mrmalty.com's calculator I need 506 Billion cells. With the two vials of White Labs yeast ...
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3answers
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Will there still be yeast leftover for second fermentation after filtration?

I want to filter my beer then put it in the bottles for the second fermentation (aka making the beer fizz). I am worried that I will get rid of all the yeast and end up with flat beer.
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5answers
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No bubbles in the airlock - should I still bottle the brew?

I'm attempting my first brew using a kit with all the provided ingredients (it's a lager). My brew is still in the big tub and has been there for about 2 weeks now. Initial SG was 1.040 and it's now ...
5
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3answers
113 views

Yeast and Hop Longevity

I picked up the ingredients for an IPA when I was getting the ingredients for a Milk Stout a while ago. The plan was to have everything at the ready so I could make the IPA shortly after the stout. ...
6
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4answers
306 views

If a vial of yeast is at room temperature for 3 days then put back in the refrigerator, is it still viable?

I live in an apartment and didn't receive notification that my yeast had arrived for 3 days after it got to the office. Normally, I'd just toss the vial of yeast and go to my LHBS to get more, but ...
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2answers
720 views

How to clean yeast

I like reusing yeast to save money, and I like having my own "house" yeast. However sooner or later my yeast eventually dies and becomes unusable. I have a feeling that each time I repitch, I'm ...
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5answers
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Is it necessary to aerate wort when pitching onto an existing yeast cake?

To my knowledge, aeration provides oxygen so that the yeast can reproduce before fermentation. If you're pitching onto an existing yeast cake, there should theoretically be enough yeast already to ...
2
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3answers
786 views

Wrong yeast…cloudy beer?

I was planning to make an IPA and was planning to use wyeast #1056 but i think that I mixed up my yeast with another guy at the store cus after I pitched i noticed that the yeast I had added was ...
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12answers
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Baking yeast for brewing?

Has anyone ever used the ubiquitous Flesichmann's baking yeast for brewing? Is there a fermented beverage style for which it works particularly well?
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6answers
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Shaking vs not shaking

I'm playing with a yeast starter right now and I've noticed when I shake the mix the yeast gets more active. I'm wondering how this applies to my actual fermentation. So I was thinking I'd let my ...
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5answers
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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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2answers
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my beer smells some like yeast ?!? taste ok. but smell is off? help.

my beer smell like yeast. taste is ok but there is a strong off odor.
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9answers
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Brewing Solid Things: Can Leftover Yeast Be Used for Bread?

I find myself baking a couple loaves of bread just about every weekend. Has anyone tried reusing their yeast from brewing for baking bread? I've heard that using some of the spent grain in bread ...
4
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2answers
258 views

Looking for a relatively low attenuating yeast with distinct Belgian flavors.

I'm working on a recipe for a Baltic porter but would like to ferment it with a stran that produces distinct belgian flavors. The problem is that most of your belgian strains are too high attenuating. ...
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2answers
810 views

How do I make a Yeast Starter?

I know I should be using a Yeast Starter so that I can make sure I have enough, healthy yeast, but I've never managed to go around to it. How would I start a yeast starter? How long before brewday ...
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2answers
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How long can yeast be stored?

If I buy a tube of liquid yeast from my local homebrew store and throw it in the fridge, how long before it's no good? How 'bout dry yeast?