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Do alcohol vapor escape through the fermentation / air lock?

Not at all. Technically, you may be losing an absolutely, immeasurably tiny amount of alcohol, but it would have to vaporize from the beer, absorb or condense into whatever liquid is in your airlock ...
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6 votes

How to brew moonshine?

Moonshine is the name for illegally made spirits of non-specific ingredients. So I will answer your question as if you asked something like: "How do I make spirits". Caveat: Currently, as far as I ...
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6 votes
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Ethanol / Methanol : Prison Hooch

Beer made from barley malt will contain almost no methanol. Fruits high in pectin will produce some methanol, but it's only a health concern if you're distilling. (That being said, I've had some nasty ...
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  • 8,978
6 votes

Will accidentally shaking the mead lower the alcohol percentage?

No it wont. In fact it can break up yeast floculation and aid fermentation. There is risk of oxidation if much alcohol has been produced when it was shook. But the c02 in headspace should minimize it....
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5 votes

Do alcohol vapor escape through the fermentation / air lock?

Alcohol Losses from Entrainment in Carbon Dioxide Evolved during Fermentation H. W. Zimmermann, E. A. Rossi Jr. and E. Wick + Author Affiliations Research and Development, United Vintners, Asti, ...
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4 votes

20% sugar, water and yeast brew smells awful quickly, how to fix?

A cheesy smell usually means you have bacteria in your mash and they have access to oxygen. If this were a sour-mashed beer it would be considered a lost cause at this point. I don't know how this ...
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4 votes
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Gently stir fermenter before bottling?

No, the alcohol is dispersed throughout the beer. Indeed, the entire thing is homogenous.
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4 votes

Measuring alcohol content

If you don't want to do refractometry or hydrometry, your next best generic option would be ebulliometry, which is basically measuring the bubble point of the liquid, where the bubble point depends ...
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  • 608
4 votes

How to make an optimal fermentation for ginger beer with ginger bug

Right so there's no "optimal" method for this, brewing is a balancing act between sweetness, alcohol, carbonation-pressure and yeast. Even things like the shape of the fermentation vessel effect the ...
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4 votes
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How can I raise alcohol content in my rum?

You will not achieve 40% using fermentation as the only technique. Yeast have a certain alcohol tolerance that is usually between 14% and 18% (wine yeast), above that percentage, yeast will stop ...
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4 votes

Guess Alcohol By Weight With ACTUAL Weight

You cannot do that based upon the weight of a sample of your final beer, because then you have a mix of water, alcohol and final sugars: Final weight = Weight of water + weight of alcohol + weight of ...
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  • 3,575
3 votes

Sensor for measuring alcohol content of wine

There are relatively affordable devices (iSpindel and TILT) that continuously report specific gravity wirelessly. You can use the data to derive the alcohol content with a pretty good degree of ...
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3 votes
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Measuring alcohol content

The most reliable way to determine alcohol in any fermented drink, without the need for several thousand US dollars in equipment and some seriously technical laboratory procedures, is distillation. ...
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3 votes

Measuring alcohol content

A vinometer can mesure alcohol of a dry wine (all sugar needs to be fermented). You would need to add some dye to see the results if you have a transparent liquid. It can usually measure between 0 ...
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3 votes

What is the best plastic to use to store alcohol?

There is nothing better than glass from a standpoint of oxygen ingress. The next best choice would be PET, followed by polyethylene and polypropylene. With PE and PP the density of the material (which ...
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3 votes
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Why do we use 95% alcohol in Liqueurs?

The alcohol in limoncello or other liqueurs is almost always industrially produced, and thus fit for consumption. It does not contain methanol or fusel alcohols. So, made this way, liqueurs are not ...
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  • 3,575
2 votes

What is the best plastic to use to store alcohol?

Polypropylene is commonly used for brewing buckets but is not so good for containing pressurised/fizzy drinks. PET is most commonly used for fizzy drinks bottles. PET soda bottles are good for ...
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  • 5,611
2 votes
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Beer, alcohol - body ratio

Well you can quite simply calculate the amount of ethanol consumed easily: Stout 0.2L*13.49%=26.9mL Double IPA 0.33L*8.5%=28.05mL It would appear that the 0.33L DIPA delivered more ethanol.
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2 votes
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Does distilled water and/or alcohol cause airlocks not to bubble?

To elaborate on my comment more. Some airlocks won't show tale tale signs of c02 that has already escaped if using a solution in them that won't form bubbles on their surface like pure water or ...
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2 votes
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Do sugar alcohols count against yeast alcohol tolerance?

Short answers No and No. Although erythritol is an alcohol it does not count against the 'alcohol' tolerance of yeast. When we speak of the alcohol tolerance we are not strictly speaking about all ...
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  • 6,993
2 votes

Measuring alcohol content

IMHO HPLC is the best method probably followed by spectroscopy. measuring ABV by distillation is "indirect" due to the formation of an azeotropic mixture between alcohol and water. They cannot be ...
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  • 5,611
2 votes

Do alcohol vapor escape through the fermentation / air lock?

Does alcohol vapor escape via the airlock? Yes, it does; however, the amount that escapes is negligible in terms of affecting the alcohol level in the fermenter. If you go up to the fermenter and ...
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  • 21
2 votes
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How to calculate liqueur alcohol percentage and final volume

Let's see if we can reverse engineer this :) The density of 95% ABV spirit is ~ 0.8 Therefore: 500g/0.8 => ~625ml of 95% spirit. 500g water is 500ml. but your 500g of sugar as it disolves will ...
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  • 6,993
2 votes

How to calculate liqueur alcohol percentage and final volume

Most alcohol is labeled with ABV (Alcohol by Volume). Therefore, if you have 1L of 96% alcohol mixed with 1L of water, you will have 2L of 48% ABV. Looking at density is something we do when ...
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  • 560
1 vote

Should I be worried

If you are using a simple pot still, you may not get high enough proof to burn on your first run. Without knowing actual volumes and ABVs here it is hard to say what is the case here. Normally when ...
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  • 141
1 vote
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How to brew moonshine?

Disclaimer: I'm a New Zealander (the only country right now where home distillation is legal) and I distill spirits on a regular basis. I use a Robobrew with an Alembic Pot Still Attachment. Why a ...
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1 vote

Sensor for measuring alcohol content of wine

There are sensors that do this. I am not personally familiar with their accuracy, maintenance or robustness. I am aware of this type of device from Anton-Paar https://www.anton-paar.com/us-en/...
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1 vote

Will accidentally shaking the mead lower the alcohol percentage?

The answer to your question is really dependent on which stage of the fermentation your mead was in. If it was shaken during the aerobic phase... perfect. The yeast require oxygen to divide cells and ...
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  • 511
1 vote
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How do I remove the medicinal taste of vanilla extract in my beer?

More likely than not, your issue is with Phenolic and not Vanilla Extract (although, I would just use beans for brewing). Brad Smith has an excellent write up on that: Phenolics and Tannins in Home ...
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  • 1,142
1 vote

Do alcohol vapor escape through the fermentation / air lock?

It is incorrect to say alcohol will only vaporize at 174-178. The boiling point of alcohol is 173. It would be the same as saying water will only vaporize at 212. Of course water, like alcohol, will ...
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