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

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How to know how much starter to make from harvested yeast?

There are plenty of calculators that tell you how much starter to make for a specific amount of starting yeast and for a specific gravity of the wort. On packages/vials of yeast it tells you the ...
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If I live in a country where alcohol is prohibited, how to I deal with these obstacles? [closed]

I will have access to wheat and barley, only fresh, nothing malted. I have been reading online a little on malting. So this step doesn't seem to be an issue. My real issue is yeast. Assuming that all ...
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Adding boiling water to raise temperature during fermentation

Beer was getting cold so in a desperate attempt to raise the temperature I put near boiling water into the container. So 450ml into 23litres of beer. The beer had only been brewing for 4 days. Will ...
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331 views

What is the proper way to supplement a yeast starter with oxygen via an aeration stone?

I have two yeast starters going on my two homemade stir plates. The stir bar or the stir plate for one of them is malfunctioning and I can not increase the speed enough to get a vortex going. It is ...
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How long does harvested yeast keep

Just like the title says: how long does harvested yeast keep? I am assuming to keep the yeast you have to store it in the refrigerator, right?
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Pitched yeast into head of wort, will this delay/ruin its effect?

I am a first time home-brewer. Followed the instructions to the letter. When I added the cold water I "splashed" it in to aerate it. The wort had a large head at the time of pitching the yeast. Will ...
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Which strains of yeasts are the cleanest for warm/hot fermentation?

I am from Puerto Rico and the temperature here is like summer all year round(between 75 to 95*F) , and I really want to know the cleanest strains of yeasts for this kind of temperature. (clean ...
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Where can I find information about the yeast Saccharomyces Bayanus?

I was able to find plenty of information about the ale yeast S. Cerevisiae and lager yeast S. Pastorianus, however information about the wine making yeast S. Bayanus appears to be more difficult to ...
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Purposely underpitching

So I am planning a roggenbier, partially because I want to try one, but largely to grow up a cake to make 15 gallons of weizenbock. Hefe's are ok in my mind, but my palette basically just wants ...
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684 views

When should I add orange peels to my homebrew?

I've been planning to experiment with orange peels for a while now, but I don't know when to add them, when should I throw them in? Last 15 minutes with the aroma hops? At flame-out? After primary? I ...
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135 views

Vacuum sealing harvested yeast

Looking at this video I had the idea of vacuum sealing yeast that I harvest from my beer batches to better protect it from bacteria/mold. My plan is to rinse the yeast with boiled (sanitized) water ...
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Bad (dead) yeast? What now?

Brewed an ESB yesterday, pitching Wyeast 1028 @ 70 degrees F. Stirred and shook carboy for oxygen, then airlocked and moved moved to the basement. This morning, carboy is @ 71 degrees F with NO ...
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115 views

Does Thomas Hardy use a separate bottling yeast strain?

Combing through the miriad different ideas about brewing a Thomas Hardy clone, I've become confused about what the consesus is about how "the real thing" is brewed. WLP099 is associated with "Thomas ...
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Pitched Yeast at 80-85 deg. Problem?

I pitched English Ale yeast (white labs) around 80 deg, not realizing it was that warm. Relative temp in the room is 68, but wort will not cool down below 80....strange! Its been about 24 hours at ...
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How long can a yeast starter stay on a stir plate before pitching?

Two days ago (on Wednesday night) I made a yeast starter on my stir plate. I purchased a thermometer probe that I intend on modifying a fermentation bucket with, which I thought it would arrive today ...
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Why Wouldn't Chilling a Yeast Starter Cold Crash or Inactivate the Yeast? [duplicate]

We boil DME and water to make a solution with an OG of 1.040, pitch the yeast and place it on a stir plate for a couple of days to make our yeast starters. After this, it is commonly suggested to ...
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183 views

High OG content for yeast

I had a higher than expected OG in my homebrew. It was estimated to come out to 1.060 but instead ended up at 1.076. The back of the yeast I used said that it is good in a brew of up to 1.060 OG. The ...
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253 views

Yeast Starter Vortex Size

I've read online that the size of the vortex in a yeast starter does not matter. Why is this true? When I was experimenting with water yesterday, I created a monster vortex (very cool) and could see ...
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264 views

Total Volume of Yeast Starter in Regards to Evaporation from Boiling Wort

Today I did my first yeast starter. I purchased the 2000mL flask and DME from northernbrewer, and it came with instructions for doing both 1000mL and 2000mL batches. It suggests 1000mL for 5 gallons ...
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322 views

Flowers of Wine (Problem)

Context: I am currently working on a batch of jalapeno-cranberry wine. It's been in primary for five days so far and I am beginning to suspect I have flowers in my wine. I was not too concerned ...
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188 views

Why does my witbier stink?

I've searched far and wide and can't find a good answer. Seems to be a lot of talk about the sulphur smell I noticed during fermentation, but this is a bit different. Brewed this masterpiece up and ...
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168 views

Yeast starter left out of refrigerator, is it OK?

I created a yeast starter from some yeast from my primary fermenter and some DME following standard steps and the fermentation looked great. However, I went on vacation and forgot to put my yeast ...
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“Quiescence Yeast” Or will my yeast-to-be survive a travel to the caribbean?

This is a related question, but not a usefull one to me :( I intend to buy liquid yeast from northenbrewer (WLP099 in case you wonder) and I currently live in Venezuela, a very hot and sunny place ...
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683 views

Lager yeast fermenting at 25-30C

The summer is approaching, and I would like to make some experiments using lager yeast, just completely out of its temperature range. I guess that steam bear was made using lager yeast at higher ...
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730 views

What to expect from champagne yeast?

I bought a pack of champagne yeast, but not sure why, just to try it :) What differences should I expect compared to a "normal" English ale yest?
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What volume of brewer's yeast to use for yeast-nutrient-less dandelion wine?

I'm trying my first, 1-gallon batch of dandelion wine. Some recipes say "1 packet" of brewer's yeast, and mine doesn't even specify an amount. It also specifies to add "yeast nutrient," which my ...
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Dropped the temperature as it was getting out of control, did I shock my yeast?

Making an IPA with an OG of 1.069, we pitched at 70°F with good ol' Safale US-05, just dry out of the packet as I've always done with US-05 with good success (I tend to trust it a little too much ...
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439 views

Problems with Wyeast London Ale 1028?

I had a brew day yesterday and ran into something a little odd. I smacked a pack of Wyeast London Ale #1028 berfore I started my routine. After everything was said and done with the boil it had been ...
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yeast cell count importance

I have a had a question for quite some time that nobody has been able to answer. The question is more academic or theoretical than it is practical. Perhaps the community here is a tad smarter ...
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456 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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Why is my attenuation so low?

Here's the recipe: > Recipe Specifications > -------------------------- > Boil Size: 7.37 gal Post Boil Volume: 6.38 gal Batch Size (fermenter): 5.50 gal Bottling Volume: 5.50 gal > ...
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Yeast pitching and wort cooling

I'm making an American Brown Ale and added liquid yeast to the wort that may have been too hot. The yeast was in the fridge and out to cool for 45 minutes. My guess is: Wort temp: 26-27C or about 80F ...
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212 views

Making a starter without DME?

Planning to start to use liquid yeasts and will need to do some starters. It is hard to get hold of DME over here (I can get some hopped LME, though). I was thinking on doing a starter from grains, ...
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Does using a fining agent effect the flocculation of yeast?

I'm doing a series of smash beers all using the same yeast same temp same grain. I'm noticing a big variation in flocculation on the current batch (forgot the Irish moss oops) WLP001 by the way. Im ...
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174 views

Yeast Starter Stopped after ~20 hours

I am trying to make skeeter pee without the slurry from a previous batch. so I wanted to make a starter to make sure my yeast were happy guys. I took 3 pints of water to 1 teaspoon of yeast nutrients ...
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321 views

Make root beer without a refrigerator

All the recipes for root beer end with, bottle up your root beer in a plastic bottles. Put it away and monitor the bottles when they become hard they are ready, 2-3 days. Put them in your fridge to ...
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How long to keep in blowoff tube?

Today I learned what happens if there's too much yeast and a container too small (I have a 1 gallon batch). So according to instructions I sanitized a hose and connected the hole in the fermentor and ...
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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 ...
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Is it normal for WY2112 to stall?

I've made three batches with the same colony of WY2112, and each one of them has exhibited the same odd behavior. I pitch a good quantity of yeast into oxygenated wort at 65 degrees F. Within 24 hours ...
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Yeast Ok After Being Near Freezing?

I have some California Ale Yeast WLP001 that I accidentally put in a corner of my fridge that is near freezing and it has been there for about a month. It's still in liquid form, so I think it should ...
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139 views

Off flavor of kegged Wheat beer

I brewed an AG wheat beer and used WLP351 as the yeast for this. Let it sit in the primary for near two weeks (66°F/19°C) and I did do a secondary on it for about another weak to try and decrease the ...
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Rescuing a weak lager fermentation

I'm currently fermenting a spiced dark lager with an original gravity of 1.064. I began fermentation 2 weeks ago today with a White Labs 830 yeast that I made a starter with. The yeast was a bit old, ...
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I pitched my starter when it was too hot. Is it still ok to use?

I'm making my first starter and I accidentally pitched the yeast when the wort was still warm. I've had it on the stir plate for 24 hours and then a 30 minute rest. See picture, is it still ok to use ...
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Is 2 hours cooling the wort before adding yeast too long

I forgot about the warmer tap water and found my wort was way too hot and even after adding ice and standing the fermenter in ice water it took nearly two hours before is was the right temperature so ...
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378 views

How long to ferment for?

I made a coopers IPA can 2 days ago and it's currently fermenting away (bubbles every few seconds) and is at around 21-24 deg c (69-75 deg f) which is what it says as the label. The can says to ...
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182 views

Pitching yeast the next day?

If I wake up and decide to brew an impromptu batch, can I begin a starter at the same time and just pitch the next day? Seems comparable to no-chill brewing as far as contamination concerns, though ...
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What happens if I Double Brown Ale

I'm thinking about making something like Frambozen from New Belgium from brown ale and added raspberries. However it's more of a sipping beer / higher alcohol content than the regular brown ale. ...
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What is the minimum amount of time required for a yeast starter?

It is generally advised to leave a yeast starter for at least 24 hours to get optimal yeast growth. If I only have a few hours, is there any point making a starter from my liquid yeast pack? Is ...
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Yeast harvesting

I have just read an article about harvesting yeast (http://www.homebrewtalk.com/entries/yeast-harvesting-novel-approach.html). The author talks about making a starter and taking a part of the starter ...
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US-05 Fermentation Temps

On the package of the US-05 it says it's temperature range is 58-75F. However, all the reading on forums I am finding people tend to the lower end of the spectrum, even calling upper-60's to be too ...