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Questions tagged [fermentation]

The anaerobic process by which yeast convert sugars into alcohol and carbon dioxide.

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When to bottle high ABV beer?

Question: Aside from confirming fermentation is complete via consistent hydrometer readings, is there another way to check that the beer is ready for bottling, particularly in higher abv beers? ...
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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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Brewing a fruit beer with WLP648: keeping it on primary for an extra three weeks before adding fruit

I am making a basil-raspberry sour with WLP648 as yeast. Unfortunately I need to go on a work trip for the next 2-3 weeks and the beer has not fully attenuated fully. I was wondering if it hurts to ...
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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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High F.G. Pros and cons of fixes

I think I know why my F.G. is so high, but I would like to know what are my options to try and fix it and what are the pros and cons of each. Below is my recipe and readings during mash. the ...
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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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FRENCH COLOMBARD Won’t start fermenting

I picked up 6 gallons each of Cabernet Sauvignon and FRENCH COLOMBARD from a local vendor here in Providence,RI. I used red star dry yeast, the cab started fermenting almost immediately but it’s been ...
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Can I increase the carbonation of already-bottled beer?

I just made my first ever batch of beer, and it turned out great! The only thing is that my priming sugar calculation was slightly under what it should have been. I added 1/4 cup honey to a (finished ...
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Can I add commercial apple juice to the apple juice from my trees which I have pressed when making cider?

I can I add some good quality natural apple juice which I have purchased to the apple juice from my own trees when making cider? If so when shoudl it be added, before or after fermentation?
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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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1answer
59 views

Fermentation stops after a few hours, then resumes after half a day

Fermentation stops a few hours after pitching, and seems dormant for half a day, before resuming activity. This only happens in one out of two fermentation buckets, both pitched the same WLP400 (Wit ...
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The Mashing proccess

What is the Mash? Is this the boiling of the grains, Hops and all the Fermentables. If this isn't it please school me up, with the Kiss program. Or in other words keep it simple.
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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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Fermentation container leaking carbon dioxide

I've just finished preparing my first fermented drink ever (Kvass) and I used a Mason jar to store the preparation during the 2 days of the fermentation process as advised by the various guides I ...
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Air Bubbles slowing down

I am distilling. I had air bubbles every 5 seconds and a week later became every 2 and a half minutes. Do I wait till there is none whatsoever or consider it done. Thanks for the help Kris
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Length of fermentation for cider

Newbie homebrewer working with store bought apple juice for my first test batch. How long should fermentation take? About 5 days ago I added my yeast to 4 litres of apple juice, and it looks like ...
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Why not to calculate specific gravity through weight?

I have read that you can calculate specific gravity by dividing the weight of a known volume of liquid in the weight of a known volume of water. After reading that I thought about filing my fermenter ...
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1answer
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How long to wait on Lalvin BM45 wine yeast in beer wort before giving up?

Brewed a 10 gallon batch of a saison wort at a super-dry mash temp (142-145 F). It's currently split between two conical fermenters, one of which has around 150 oz of a tart cherry puree. Rehydrated ...
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“Debugging” a bitter DDH NEIPA

I brewed a DDH NEIPA recently and it was a great learning experience. I got the aromatics I was looking for but the flavor was bitter. The batch was bound to be wonky because of size limitations ...
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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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4answers
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What is the smallest fermentation vessel i can use for a given batch volume?

I plan to scale a 20 litre batch recipe down to just 4 litres so that i can try the recipe out before committing to a full batch. Problem is I'm unsure if my 5 litre demijohn is large enough to use ...
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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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Spraying Starsan over fermenting wort

Hi guys I have a question, I just brewed Omnipollo 2:14 clone, and the recipe calls for 1.3 kg of raspberries, I soaked the bag in the starsan,roughly sprayed the frozen raspberry with starsan too and ...
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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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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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Brewing ale: should fermentation be kicked off at a higher temperature?

I am still fairly new to homebrewing, and am on my second batch using this kit. The instructions given in the kit I don't think are particularly clear. It states that I should add 3.5 litres of ...
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The longer you leave cider

This is my first time,I was wondering if I leave my cider for say 3 weeks instead of the recommended 7-10 days,will this improve it?
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Should I boil apples before using them in a mash?

I'm thinking about bacterial/wild yeast contamination etc.... Or will just washing them under the tap be suffice? Also can I use the cores?
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ABV from one SG?

The most common way to calculate ABV (Alcohol By Volume) is through some correlation between Original Gravity (OG) and Final Gravity(FG). Is there any way to calculate ABV just from the current ...
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2answers
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How do you let water sit until the chlorine vapours off without any infection?

So, apparently if you let tap water sit for a few days the chlorine will evaporate off but how can one safely expose the water to the the air without risk of infection from airborne particles?
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Minimum working pressure of stainless fermenter to carbonate in fermenter

Which is the minimum working pressure to be capable to carbonate my beer inside the fermenter when the fermentation is over? I'm about to buy a 0,1MPa (working preassure) fermenter.
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1answer
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Does the volume of juice determine the length of fermentation?

Will 10 ounces of juice ferment the same rate as a gallon of juice, with the same amount of yeast and sugar added in both?
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Fermentation still stuck after adding nutrients?

I'm brewing an imperial wit beer and it seems i have a problem with my wort beeing stuck in fermentation at 1.040. My wort is wheat extract 3.4kg and 1kg candi sugar, steeped with some oat flakes, ...
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Which yeast/bacteria produce no, or little alcohol (like Bionade)?

Producing a variety of different beer styles, we are able make adult friends happy, however children are left out :( I therefore wanted to ask if somebody knows where to look for yeasts that are not ...
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Save the (Belgian) wit! I forgot the candi syrup: what should I do now?

Cleaning up after brewing my first extract-based Belgian wit, with wort already cooled and in the carboy, and yeast pitched ... I discovered to my horror i'd forgotten to add the candi syrup to the ...
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1answer
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Why does my fermentation keep stalling?

Each of my last four batches has stalled well above FG. The first two restarted after bottling and caused bottle bombs. The last batch was a kolsch with OG 1.047. Wyeast 2565. Stalled at 1.024 for ...
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Fermenting grape juice with Potassium Metabisulfite without adding anything

I recently fermented Kedem brand grape juice (which contains potassium metabisulfite) by only adding rouge red star yeast (and slapping on airlock and leaving it on my kitchen counter). I recently got ...
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Carboy keep overflowing

I have a 19 liter carboy, and put a 18 liter wort. 10 hours later I woke up and noticed carboy overflow krausen all over it. I am concerned whether air lock will clogged down and explode. I will not ...
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Why does my wine taste salty?

I’ve been making regular batches of pomegranate wine. The latest batch fermented faster than usual due to ambient heat increase. However the result has a salty taste. What would be the cause of that ...
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1answer
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Fermentation velocity of Brettanomyces Graphs

I have spent a fair amount of time recently looking into Brett, Brett Sacc and Mixed fermentation; for my next project, but one thing I have really struggled to find is any graphs of different Brett ...
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Cold crashing and risk of oxidation

I'm brewing a Belgian golden strong ale for the first time. According to the fermentation schedule, it should cold crash and lager at 32°F (0°C) for three weeks. Even though I've cold crashed before, ...
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Brewing a Flanders Red Bruin/Historic C18 Porter?

I am about to brew my first test batch of a Flanders Red/Brown. I am thinking Rodenbach, but with local ingredients. So, for me Maris replaces lager malt, Admiral and Progress replace nobel hops. ...
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My first Brew gone wrong?

I attempted my first home brew from a kit last night, but underestimated how long the process would take so rushed it a little. After waking up this morning, I’ve realised I added the beer yeast into ...
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Add US 05 to my smack pack?

I have an ale that will have an OG of .073, but only 1 smack pack on hand and brewing in 12 hours. Nervous that the 1 pack may not be enough to support the OG? I always have an extra few dry packs of ...
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Suggested fermentation temperature for the beer kits

Suggested fermentation temperature on the beer kit is ambient temperature or its the temperature reading on fermentation bucket? Also i am not able to keep steady ambient temperature as our flat's ...
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I've had my home brew sitting at 19c for 4 days now but there are no bubbles

I've had by home brew sitting at 19c for 4 days now but there are no bubbles showing in the air Lock I opened the lid slightly to look inside I can see the yeast floating on top and there's a fairly ...
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Should we stir the brew?

I m a beginner in wine making, kindly suggest should we stir the brew? If yes, after how many days? Should I stir or shake the brew every day or after how many days I should open the container and ...
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2answers
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Refermentation with fruits and sugar

I recently brewed a wheat beer that is now in primary fermentation. I planned on using yuzu juice after primary to give a special taste. Also, after some thought I wanted to add a little ABV (from ...
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How to use ( Super Kleer ) for the Beer !

How to use ( Super Kleer ) to clear the beer ... I purchased that but i didn't find a clear Direction to use it for the Beer ... Is it during primary or secondary ! Im planning to use it in the ...
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Fermentation stuck on 1.020

Here is the question. I brewed an IPA: 0.25 kg Dark Munich 0.25 kg Caramel 40 L 0.50 kg Wheat 5.00 kg Pilsner SG 1.065 Really wanted to try Giga Vermont yeast golden pitch (you can pitch one pack ...