Questions tagged [yeast]

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

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22
votes
1answer
701 views

Always making a starter vs. following package description

I have noticed that the smackpacks say on the package that the package is meant for a 5 gal. batch and that you should pour the pack directly into the wort. On the otherhand - nearly everyone tells ...
19
votes
5answers
11k views

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 ...
10
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5answers
5k views

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 ...
23
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16answers
25k views

Fermentation Temperature Control Methods

What different methods do people use to maintain or control fermentation temps? This includes maintaining temps for both Ales and Lagers. For most climates, active control is necessary for doing ...
17
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7answers
12k views

How do I keep yeast from a strain that I've bought?

I'd like to stop buying yeast all the time, especially when I use the same strain repeatedly. This is especially a problem when it comes to seasonal strains. I'd like to brew with WLP351 Bavarian ...
18
votes
4answers
5k 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 ...
10
votes
4answers
7k 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 ...
9
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3answers
10k views

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?
25
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5answers
3k views

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 ...
6
votes
3answers
560 views

Tips for brewing at high temperatures

I live in a tropical country and don't have an extra freezer, but I want to comeback to homebrewing. I'll dare to brew at high temperatures and would like to find ways to get a decent tasting beer. ...
9
votes
2answers
3k views

When bottle conditioning, when should I re-yeast, and how much yeast should I add

I have a Chocolate Cherry Stout that is currently in secondary on fresh Cherries. It has been sitting on the cherries for 2 months now. As I prepare to bottle I want to be sure I have enough, healthy ...
12
votes
5answers
21k views

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?
11
votes
12answers
128k views

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?
7
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4answers
4k views

Yeast , dead or alive?

G'day , how long after the fermentation has finished does the yeast live ? I am curious because not only is it the cost of the yeast but if you find a particular strain and you like the taste ( ...
6
votes
2answers
2k views

Will Jalapeno or Habanero peppers adversely effect yeast

I have a recipe in front of me for a Saison of the spicy variety. It calls for the addition of one Jalapeno pepper, seeds included. First off, I do enjoy a fair amount of spice (far more than anyone ...
11
votes
5answers
3k views

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
3k views

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 ...
5
votes
4answers
426 views

Measuring alcohol content

How do you measure alcohol content in a fermented drink without relying on measurements of gravity? Say we have a bottle of water (pasteurized), add sugar (that has been treated to have no living ...
4
votes
1answer
578 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..
3
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1answer
1k views

Fermentation hasn't started?

Made a kit on Saturday, 1/2 lb. Caramel 80 specialty grain, 9.15 lbs rye extract. Kit came with the Wyeast American Ale smack pack. When I got the yeast pack out of the fridge, the pack was already ...
32
votes
10answers
59k views

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 ...
19
votes
1answer
12k views

Why is it bad to pitch too much yeast?

What are the effects of over-pitching? Where is the line for, say, a 1.050 beer? There is also a question for to under-pitching.
13
votes
2answers
1k 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 ...
15
votes
1answer
6k views

When is it necessary to pitch fresh yeast for bottle conditioning?

I've read that you can leave an ale to secondary for months and enough yeast will remain in suspension that you won't need to pitch additional yeast when bottling. But are there times when you do ...
11
votes
4answers
6k views

Using Multiple Strains of Yeast in the Same Batch?

I've been thinking about this recently, so I figured I'd ask it here. Is there any reason you couldn't use two strains of yeast in the same batch of beer? For a particularly high gravity amber ale, ...
11
votes
1answer
3k views

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 ...
9
votes
2answers
10k views

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.
16
votes
3answers
2k 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?
13
votes
1answer
1k 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 extract ...
13
votes
10answers
16k views

Can I dry my own yeast to make it relatively shelf stable? How?

Obviously, it can be done, as dry yeast works for fermenting beer. I go sometimes a month or two between batches, and carrying over one yeast culture across beers seems a bit of a pain. How is dried ...
11
votes
2answers
13k views

Proper Way to Store Yeast

What is the proper way and temperature to store yeast?
10
votes
5answers
30k views

Alternative/homemade yeast nutrient?

I forgot to add nutrient to my must when I put it in my carboy the other day (first time brewing mead). I fear I won't be able to get to my homebrew store before it's too late, so I'm wondering if I ...
9
votes
4answers
4k views

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 ...
7
votes
2answers
273 views

Pitching rates and ester formation

From what I read in most publications, ester production tends to increase at lower pitching rates. It's not a linear relationship by any stretch of the imagination; in fact there seems to be some sort ...
6
votes
1answer
1k views

Will blending a highly attenuating yeast with a highly alcohol tolerant yeast cleanly lower the final gravity in a very high gravity ale?

I've brewed some ridiculous beers in the past, my highest original gravity resulting in over a final 18% ABV using WLP099 yeast. That particular beer turned out well for how inexperienced I was when ...
6
votes
2answers
869 views

Making a starter when reusing yeast

I want to reuse the washed yeast from a previous batch of beer in my next batch. Should I make a starter for it? If so, how much of it? I looked at MrMalty, and it seems to me they tell me not to make ...
3
votes
2answers
2k views

Kill yeast in keg

I've got a batch of cider that I've kegged. I did so at about 1.011 (OG was 1.052 IIRC). While the yeast activity will decline as the keg chills, I'd like to stop it completely so that I can bottle ...
11
votes
2answers
662 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, ...
11
votes
3answers
14k views

does starsan kill yeast

Is Starsan effective against yeast? After resuming homebrewing again after a 2 year break, I started having pellicle appearing on my starters (after fermentation had completed), which has now spread ...
8
votes
4answers
2k views

Starsan in double bubble airlock keeps getting sucked into fermenter - why and how to prevent?

I did a brew on Saturday and cooled, got in the fermenting bucket and added yeast, added starsan to the chamber in the double bubble airlock and got it under the stairs. Ever since then, the starsan ...
8
votes
2answers
625 views

Starter and smack-packs

Is making a starter a good idea when using a larger activator pack from Wyeast? Should you smack the packet and add it to the starter, or add it after it swells?
8
votes
4answers
10k views

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 ...
7
votes
2answers
2k 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" ...
7
votes
2answers
187 views

Homebrewing Soda, Safety Concerns

I wanted to try making my own soda this summer, and finally got around to it 10 days ago. Here's the thing. I didn't have/use any specialized equipment. I boiled water with sugar ~15 minutes, and ...
7
votes
6answers
18k views

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 ...
7
votes
1answer
195 views

What is necessary to keep yeast happy and healthy?

If you take left over yeast from a wash and dump it in new mash, and repeat, eventually the yeast stop reproducing due to extensive budding scars. So after 4-12 batches people buy new yeast... if not ...
7
votes
2answers
1k views

Is oxidation of yeast starters a concern?

We all know oxidation is bad, and cooling hot wort is particularly susceptible to this off-flavor-producing problem. the question is; does oxidation matter for starters? I use a stirplate to aerate ...
6
votes
2answers
1k views

cold conditioning saison then bottle conditioning

I brewed a high gravity (1080) saison and am planning on cold conditioning it in secondary at 32 degrees x 2 weeks, then bottle conditioning it. I am wonder will the cold conditioning make all my ...
6
votes
2answers
439 views

What is the best yeast to ferment beer at higher temperatures?

With all the hot weather we have been having in my part of the world recently, what would be the best yeast to use for fermenting beer at (say) 20C or 22C. Obviously I am not making a lager - but aim ...
6
votes
3answers
433 views

What does high attentuation actually mean in terms of types of sugar fermented?

So, when I fermented a cider it ended up very dry. I used champagne yeast and only added pure glucose. I then added lactic sugar since I knew that wasn't fermentable by the yeast I used. I also have ...