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Questions tagged [yeast]

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

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Can yeast survive being almost frozen?

After forgetting to place the yeast starter in the fridge overnight I placed it in the freezer this morning for a short while to do a quick cool crash. I misjudged the time and the water above the ...
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4answers
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Yeast pitching temp/ ferment temp

I have read here and there that it is ok to pitch your yeast at a high temperature, say 83°F? Seeing as it will take a considerably long time for the temperature to drop to an ambient 68°F then ...
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Ginger Beer ABV from Bakers Yeast

I’ve made ginger beer a few times. I usually make it with just fresh ginger and raw honey. Usually the I get well less than 2% ABV. This last week though I used a different honey, sourced from a farm,...
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removing sugar / dead yeasts / residues from keg

Due to some CO2 cylinder carbonation problems I have resorted to the desperate method of pouring sugar into the keg. Which is probably bad, as I have found out here all I needed was lower temperatures ...
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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 ...
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WLP648 does it make a sour?

I've been reading up on WLP648, but can't determine if this yeast will develop a sour beer on its own or if it requires something else to become properly sour aside from 3-6 months. I've read some ...
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1answer
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First Time - Honey Mead questions

I am making Honey Mead for the first time soon, I will try making 2 1 gallon jugs. I have everything I need (Jugs, siphon, DAP, red star wine yeast, honey, sanitizer, carboy), but I want to make a ...
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Should I let hydrated dry yeast cool before pitching

The Gospel of John states that dry yeast should be hydrated at a temperature warmer than what you would typically start fermentation. But John also states that yeast should be pitched from cold to ...
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Could killer yeast affect my sourdough starter?

I've just pitched K1-V116 into a batch of rosehip wine. As I finished, thoughts of one kind of yeast led to another and I went to feed my sourdough starter - and stopped. K1-V1116 is a killer strain ...
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1answer
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Beer yeast for wine making?

Does anyone know if it works to use beer yeast to make wine. I've got a batch of chardonnay grape crushed and sitting in my fridge right now, but I bought beer yeast by mistake. Can I use the beer ...
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Making alcohol at home from sugar and baking yeast

I am trying to make alcohol from baking yeast I didn't use any special tools or airlock I got the normal baking yeast, sugar(sucrose) and water Dissolved sugar in water putting the yeast in the ...
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To ferment or not to ferment for no alcohol

I am making ginger beer. I’m using basically raw ginger and honey and fermenting with bakers yeast. I’m getting somewhere between 2% & 2.3% ABV in testing. I don’t want any alcohol in the ginger ...
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Yeast or not to yeast, that is the question

So this is the third year I am making home made wine from a combination of red (75%) and white(25%). In the past the person in which I purchased from had a big industrial blender of sorts and gave me ...
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how to cultivate the beer yeast?

Do i need beer yeast for cultivating my own beer yeast? because i tried to brew beer with bread yeast and the result was not satisfying. Also, in my country as an islamic country it's not easy to find ...
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1answer
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What is a realistic growth factor in large volume stir plate yeast starters?

The Homebrew Dad yeast starter calculator (which gives you more numbers than the Mr. Malty one does) promises a yeast growth factor of about 45 times for 10 billion cells pitched into 3 litres of 1....
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1answer
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Time lapse, adding yeast a week late

After getting my grape juice in a bucket, I added the sugar and wild yeast killer. Didn't have the yeast to add before sealing it up. Checked the next day, it has a purple foam that collected on top. ...
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2answers
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How long can you wait till you add the proper yeast

I crushed my grapes added 5 lbs sugar and a wild yeast killer pectic enzyme. I haven't got the yeast for the correct grape wine process. It's been 6 days. The temperature has been maintained around ...
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Reducing the taste of yeast

How can I reduce the taste of yeast in my homebrew? Obviously filtering but are there additional options?
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Alternative to stir plate for yeast starter (and erlenmeyer flask)

Looking at creating my first yeast starter for a DIPA recipe with on O.G. target of 1.085. For this O.G. Brewer's Friend is telling me I would need a 3L starter of an O.G. of 1.040 with a stir plate ...
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2answers
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Yeast Attenuation

Does the percentage attenuation of the yeast, directly match the fermentability of the wort, ie, If i am after a one fifth gravity beer, then that has attenuated by 80% . so is the spirit indication ...
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1answer
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Home brewing for undergraduate study

I am thinking of making a beverage out of locally available starch sources. My question is, is there a possibility to convert those starchy objects to fermentable sugars? And what type of yeast should ...
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3answers
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How long does it take for yeast to mutate into having other characteristics?

I have heard yeast can mutate when you re-use yeast, and when it goes through many yeast-generations. How long does it take for the yeast to mutate? Which factors have an impact on the ...
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3answers
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Wine or cider yeast for ale

I'm a noob brewer and being distracted added boiling water to my yeast. I added cold water immediately however I'm afraid I may have committed yeastocide. The only place I could think of around me ...
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1answer
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Czech Pilsner - S-23 Yeast Alternatives Temperature Concerns

I have made a Czech Pilsner using S-23 Yeast and had very good results fermenting in a small refrigerator. Since, I don't have that refrigerator any longer, is there a substitute yeast that doesn't ...
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Culture yeast from bottles

i have read that we can culture yeast from commercial bottle conditioned beers, So is it not the same that we can use a bottle of our own beer that has been made from a brew that used a White labs or ...
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2answers
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Removed air lock ,while in the first day of fermentation

Can any damage be done when air lock is removed for about 3 to5 minutes. I repitched yeast this morning.what can I expect?
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Is it worth saving my brew?

I have started off a Cider kit. It was close to the BBD. It only actively foamed for a day or so and looked finished or dead (but in those two days has dropped from 1040 to 1018 however I didnt know ...
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Failed primary fementation - repitch?

Yeast: Mangrove Jack's M44 - US West Coast Yesterday I brewed an IPA recipe but had a couple of issues when it came to pitching the yeast. The first was that I could not get the wort temperature ...
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1answer
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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 ...
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1answer
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What yeast should I use to make a semi-sweet Ginger Beer with about 5% ABV

I want to make a semi-sweet (a little less sweet than Crabbies) ginger beer that is about 4.5 to 5.0% alcohol, and my plan was that in the end, I want it to be between 1.020 and 1.025 s.g.. Therefore ...
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2answers
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Starters for 1500 litre brewing with 100 g of Dry Yeast

What is the possible way to brew batch like 1500 liter with 100 g of yeast ? And how many starter steps need to go and how long will it take to get target pitch rate ? Thanks all !! P.S I'm new ...
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1answer
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WLP066 London Fog fermenting smell

I'm fermenting a NEIPA at the moment. It's 5 days in. At first the fermenter snelled great, the usual sweet and hoppy smell but now it smells weird like a cheap lager that's been left out all night. ...
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1answer
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FG not achieved after two weeks.

I have brewed a stout intended to be around 6%. After two weeks the FG is 1.024 but expected to be closer to 1.010. I found when I made the yeast starter (Giga Yeast 011) the yeast clumped and ...
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Cell growth factors in different types of yeast starter

Cell growth in a yeast starter is dependent on the volume of starter wort. Palmer states that as a general rule of thumb, a 1 liter starter roughly doubles the cell count while a 3 liter starter about ...
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how does light affects yeasts

according to this research: Red LED light (630 nm) stimulated cell growth but slightly inhibited ethanol formation. In contrast, Blue LED light (470 nm) significantly inhibited cell growth but ...
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why do we try to get rid of sediment?

A brief question, I will add details tomorrow. I am fermenting fruit wines in the pet-Nat style. I find the yeast and yeast activity in wines exciting, full bodied, healthy and invigorating. Drinking ...
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2answers
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Yeast harvesting from bottle and fermenter

I harvested some custom Saison yeast from a particular brewery I like. I made a starter and have kept in the fridge. As there was only a small amount in the bottle (as expected), the amount of yeast ...
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1answer
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Saving Kveik the old fashioned way?

I've been reading about Norwegian Farmhouse Ales and I'm quite curious about them. Should I drag a wooden wreath through the dregs of my Norwegian Farmhouse Ale and hang it up to dry and re-use it? Is ...
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Any way to deal with bitter taste from turbo yeast?

I had some turbo yeast left over, and figured I'd try make a couple litres of ginger beer (sugar, grated ginger, a little lime juice) and elderflower wine (sugar, elderflowers, lemon juice and zest) ...
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2answers
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Is aerobic fermentation in beer brewing a myth?

The more I read about yeast and fermentation, the more conflicting, confusing (and possibly incorrect) statements I come across. I have read in several bits of literature that yeast requires oxygen ...
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3answers
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Going past alcohol tolerance

I have recently started thinking of getting into make mead and decided on a nice 15% to start. I decided to oversweeten the batch because I don't want a real dry mead. I want to add berries to the ...
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2answers
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Will it be OK to ferment at a lower ambient temp than yeast recommends?

The yeast is Alcotec 24 hour pure original turbo yeast. I am going to try a sugar wash, so just granulated sugar, water and this yeast(which has added nutrients). Now the yeast instructions say ...
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2answers
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Beer attenuation too high

I have made ~30 batches of beer during last winter and ~7% ABV beer had FG of 1.010 to 1.020. But in the last month the weather got warmer and my beer FG has dropped to below 1.010 to almost 1.000. ...
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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 ...
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3answers
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Number of cells in a packet of dried yeast

I'm trying to improve my understanding of pitching rates, and I'm struggling with some apparent inconsistencies. An often used starting rule is to pitch about 750,000 cells per milliliter per degree ...
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3answers
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Can saison yeast use lactose?

As title states, the question is can Saison yeast use lactose? i.e. is it possible to sweeten a Saison with lactose? Or, sweeten it possibly some other way? This is about Saison yeasts, dry or ...
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1answer
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How much sugar to real apple ratio?

So I was going to try an apple cider up to around 12%. So how much sugar will I get roughly per apple and how much additional sugar should I add. The apples are a small granny smith kind. Currently I ...
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What strain of yeast is Fermentis BE-134?

The spec sheet says: The SafAle™ BE-134 is a Saccharomyces cerevisiae var. diastaticus and is characterized by a particularly high attenuation. This typical yeast strain is recommended for ...
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1answer
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Do you really need yeast/mash nutrients?

This is for a sugar wash only. I have watched a video on YouTube where they only used water, sugar and turbo yeast, no nutrients were used according to the video. Whereas other guides tell you that ...
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2answers
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Turbo Yeast for making wheat beer

I am a newbie for homebrew wheat beer making. I used the alcotec turbo yeast 24 express(distiller yeast) for the fermentation. But After 20 hours brew is stopping fermentation. Can I keep it for the ...