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

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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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1answer
859 views

Didn't reach target FG, pitched more yeast, gravity same after a week. Should I just bottle already?

My batch didn't reach the target FG and I'm trying to decide whether to just bottle or to pitch more yeast (would be 3rd pitch). I have a very similar situation to the one described here: Brewed an ...
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1k views

Starter Chill, Decant, Pitch - Why no problem with Temp Shock?

So an often repeated mantra for starters is to (1) make a starter, (2) let it ferment out completely, (3) chill the starter in the fridge for a day or two, then (4) pour/decant off the oxidized "beer" ...
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411 views

Yeast on primary fermenting foam [duplicate]

Possible Duplicate: Day 2 of Primary Fermentation of beer Is this what it should look like day 2? I sprinkled the yeast on top yesterday, and today it looks like it foamed a bit and looks ...
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2answers
4k views

Proper Way to Store Yeast

What is the proper way and temperature to store yeast?
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3answers
2k views

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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2answers
778 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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3answers
538 views

What is the proper method of pitching a starter?

What's the proper method of pitching a starter? Do I just pour the whole thing in or do I need to "harvest" a certain portion of it? I just started using starters (.25-.5 Gallons water + 2-4 cups ...
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1answer
999 views

Is Mixing Yeast OK?

Say I wanted to make an ale which has some of the banana characteristics of a Belgian yeast, but also wanted some of the citrusy flavors of an American ale yeast. Could I achieve this by making a ...
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1answer
744 views

Making a Yeast Starter

It seems that there are varying opinions about the size your starter should be. What is the basic rule-of-thumb for 5 and 10 gallon batches? How much water should be used? How much malt/malt ...
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1answer
114 views

Preparing Yeast

I've been reading the How To Brew book, and it (amongst other sites) recommends rehydrating yeast before pitching it. http://www.howtobrew.com/section1/chapter6-5.html Some sites suggest adding a ...
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4answers
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Reusing yeast at home

Reusing yeast at home is something I'm incredibly interested in, but haven't found the time to learn enough about it just yet. What are the basic steps for harvesting, cultivating, or whatever other ...
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1answer
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How do you pitch additional yeast for bottling?

This is a follow on to my other question about when you would need to pitch additional yeast for bottle conditioning. Assuming you know that you need to pitch more yeast before bottling to ensure ...
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4answers
705 views

Reusing Yeast From previous Fermentation

When I finish fermentation I am left with a large amount of extra yeast in the bottom of the carboy. Can I reuse this yeast in any way? Hopefully to avoid buying yeast again every single batch?
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2answers
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What effect do different types of yeast have when creating a recipe?

What happens when you use different types of yeast? Does it change the flavor? I'm not talking about mixing different types of yeast in the same recipe.
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2answers
104 views

Soluble yeast estimation before carbonation

Any suggestions on how to estimate the amount of yeast that remains in the brew solution after standard transfer practices without using clarification? I know that some remain because of priming ...
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6answers
9k views

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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1answer
479 views

Day 2 of Primary Fermentation of beer

Is this what my primary fermentation should look like after a day??? It looks like my yeast has been sitting on top of foam..
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3answers
901 views

How do I know if I should repitch at bottling?

My strongest homebrew batch to date is now in secondary, and I'm looking ahead to bottling. My O.G. was 1.072, and I think there's a reasonable chance that the final alcohol content will be 8% A.B.V. ...
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4answers
1k views

Are yeast “cold packs” really worth the extra cost?

Okay, so I understand the intent of the cold pack when shipping liquid yeast during very warm climates, but I assume that the useful cooling offered is very minimal compared to the temperature ...
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3answers
2k views

Should I ferment a new batch directly on the yeast cake generated by the previous batch?

I'm going to re-use the yeast cake from a low-gravity batch to ferment a high-gravity batch. Can I just put the wort directly on it? Does it then need to be agitated? Is it worth the risk of ...
6
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4answers
679 views

How to estimate yeast starter viability when using stir plate?

I have just started a transition to making yeast starters and also using a homemade stir plate and am curious how to estimate the viability of the yeast when using this method. Normally, there are ...
3
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1answer
316 views

Controlling exothermic heat from primary fermentation with A/C cooling duct

In terms of brewing with Ale yeasts, I understand that fermenter temps can increase up to 10 degrees, or more, than the ambient room temperature. As a "cheap" method for keeping the temperature of the ...
6
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1answer
2k views

Liquid Yeast for 1 Gallon Batches

I'm relatively new to home brewing and am enjoying brewing 1 gallon batches. I have been using dry yeast and can get about 4 batches from a single packet. I would, however, like to be able to use the ...
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3answers
731 views

Why do you aerate wort at first and try to keep oxygen out later?

Why should you aerate the wort before pitching yeast but then try to avoid allowing oxygen into it later in the process? What is going on with the yeast that makes oxygen good at first but bad later?
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2answers
234 views

Negative effects of Wyeast American Ale 1056 turning slightly slushy in fridge

I received a pack of Wyeast American Ale yesterday and popped it into the back of my fridge only to find this morning that it may have partially turned slushy from the (evidently) colder area in the ...
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2answers
141 views

Can I do a high temperature starter?

I know if you are adding the yeast directly to the wort you want to keep the temperature similar to that of your eventual fermentation temp to minimize shock to the yeast. However, I plan to make a ...
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4answers
306 views

Banana Mead Yeast Suggestions

I'm planning to brew a banana mead, and would like to start fementation with a Belgian yeast so that it has a good strong banana nose. I will finish with a champagne yeast, so I'm not particularly ...
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2answers
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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 ...
6
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2answers
132 views

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 ...
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2answers
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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 ...
8
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2answers
451 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 ...
9
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2answers
540 views

Smack Pack and Pitching Time

So I completed my first batch of homebrew this morning, but I forgot one potentially (okay, not potentially, definitely) important aspect of the whole process: the yeast. I didn't forget it, per se, ...
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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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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 ...
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2answers
598 views

Using Granular Yeast in a Lager

Will dry yeast do any good when brewing a lager or is it necessary that you use a liquid one? I am talking about making some kind of starter with the yeast, not just pitching it into the fermenter. ...
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3answers
545 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
447 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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768 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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3answers
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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 ...
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3answers
2k views

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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127 views

Old Brown “sour belgian”

I have an Belgian sour that has been in it's secondary for 18 months. With a terminal gravity of 1010 for over the last year, what is the best way to bottle condition this beer? New yeast? Blend?
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2answers
346 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
317 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. ...
4
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1answer
223 views

How much yeast to add back after extended lagering?

If after an extended lagering period there is fear of not having enough healthy yeast available for carbonation, how much yeast should be added back? What is the easiest form to use, dry or liquid?
4
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1answer
433 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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2answers
445 views

Harvesting commercial yeast

Which commercial beers (local and/or national) are bottle conditioned and still have viable yeast? Also, what do commercial brewers do that renders the yeast unusable (pasteurization, filtering, ...
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2answers
1k views

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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1k views

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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1answer
373 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 ...