What Does “Beer Clean” Mean? – Let’s first define what beer clean even means. Beer clean is an industry term for a glass free of any impurities that would give CO2 a place to cling to, ensuring the beer’s best look and taste. The Brewer’s Association Draught Beer Quality Manual (DBQM) defines a beer clean glass as one that: “Forms a proper foam head, allows lacing during consumption, and never shows patches of bubbles stuck to the side of the glass in the liquid beer.”
- 1 Does beer foam stick to a clean glass?
- 2 Why do some bars rinse beer glasses?
- 3 Why is beer with foam better?
- 4 Does beer foam waste beer?
- 5 Why do you tilt beer glass?
- 6 Why is there a magnet in my beer glass?
- 7 How often should bars clean beer lines?
- 8 Is alcohol or vinegar better for cleaning glass?
Does beer foam stick to a clean glass?
Why does your beer’s foam stick to the side of the glass — and does it really mean your glass is clean? Writer Alex La Guma once called pubs “a fountain of wisdom and a cesspool of nonsense.” So, you can understand why Charlton’s Matthew Daley is a little skeptical of something he heard one night at his local establishment, while enjoying a few draft beers with a friend.
“Every time we took a sip, the head of the beer would leave a ring on the inside of the glass,” he explained. That’s when the nugget of wisdom (or nonsense) was dispensed. Matt can’t quite remember if it was the bartender or his friend, but one of them said, “When the head of the beer does that in the glass after each sip, it’s an indication that the glass is clean.” And like beer foam to the side of a glass, the exchange has stuck with him.
“I’ve been pondering it ever since. I’ve been curious about it and been wondering how true it can be?” Daley reached out to the Curiosity Desk in the hopes that we could get to the bottom of what’s going on at the top of his beer glass. And I was more than happy to take up the case.
- Others, like John Tringale at Carroll’s in Medford had, but were a little fuzzy on the details.
- “I forget what it is, but the glass is either clean or dirty if it has, like, the suds on it,” he said.
- Still others, like Daren Denis at Davis Square’s Elm Street Tap Room were in the same boat as our Daley.
“One of my managers was telling me that story so I just believed him,” said Denis. “Seemed like a cool thing to say. So yeah, don’t know the exact science behind it all, but hey!” And so, I turned to someone who might know the exact science behind it: A scientist who’s an authority on what he calls the “FIZZics” of beer.
“There are a lot of interesting physics and chemistry going on in a glass of beer,” said Stanford University chemistry professor Richard Zare. The bubbles that make up a beer’s head are due to carbon dioxide that is dissolved in the beer. Zare said that, in general, for bubbles to form in a liquid — a process called nucleation — they need a place to do it.
Aptly, it’s called a nucleation site. “Where to the bubbles form when you start to boil water?” Zare asked. “Do they form in the middle of the water? Never. They actually form on the wall — the sides.” It’s the same with beer that’s being poured in a glass.
- But each bubble has a little business to take care of during its journey to the head of the glass.
- “On its way up, it is doing some other chemistry: it’s grabbing onto other compounds that are in the beer,” said UMass Amherst food science professor John Gibbons.
- Those other compounds include yeast, some residue from the hops, and a few proteins — including one that is crucial to answering Daley’s question: Lipid transfer protein one, aka LTP1.
“This LPT1 protean is found in most plants,” Gibbons said. “You find it in barley, wheat, corn, rice, you know? All these fermentation grains.” And as a lipid, LPT1 is extremely hydrophobic, which means it really does not want to be in or around water.
Unfortunately for LPT1, a glass of beer is mostly water. But all those CO2 bubbles that are produced when the beer is poured offer the LPT1 a chance to make a break for it. “This is like its opportunity to get out of the water,” Gibbons said. “So, it clings onto the bubble and takes it for a ride to the surface.
Gibbons says that all of the bubbles that comprise a beer’s head are laden with LPT1, just looking for a way out. “But the ones that are on the side of the glass can grab onto something,” Gibbons explained. “They can anchor onto something. And that’s why you see — every time you take a sip — you get this really nice line. Lacing seen on a glass of beer Gibbons said that substances on the inside of the glass can discourage or entirely prevent lacing from occurring. That includes a number of materials most commonly responsible for a dirty glass in a bar or restaurant — like lipstick, grease, and soap residue.
“All of that stuff can interact with the foam and kill the foam and the head,” he said. “And end up killing the lacing effect, too.” Now, there is one notable caveat. Stanford’s Zare says if you see bubbles clinging to the side of the glass below the surface of the beer, there’s a good chance the opposite is true.
Scratches in a glass — but also things like lint, food particles or other specks of grime — can give those bubbles that are too small to escape a place to hide and not get crushed. So, if you see bubbles dancing around the sides of your glass, it might not be as clean as it should be.
Why do some bars rinse beer glasses?
If you’ve ever gone to a nice bar and ordered a beer, you may have been confused—and concerned—when you saw your bartender rinse a glass quickly before serving you. Do they not wash their beer glasses ahead of time? Is that the full extent of the washing your glass will get—because that did NOT look very thorough? Was there some dirt or a bug in the glass? Luckily, the real answer has nothing to do with cleanliness and more to do with optimizing the taste of the beer.
- Rinsing a glass (that of course has already been washed) removes any lingering dust or detergent residue from the glass, which ensures that the customer is only tasting the beer they purchased and not anything else that would interfere with the intended taste.
- For this reason, good beer bars, especially those that specialize in craft beers, install glass rinsers, often called a star washer or star sink, right behind the bar so they can quickly and effectively give the glass a final rinse right before serving.
But the benefits don’t stop there: When the water from the sink blasts the glass, it also makes it more slippery, minimizing the friction when the beer fills it. Because of this, you get a cleaner pour and a more fragrant head, which also helps enhance the taste of the beer.
Additionally, the final spray of water also helps to keep the glass cool, which in turn keeps the temperature of your beer lower, and who wouldn’t want a beer that stays cooler longer? So next time you see one of these sinks near the bartender when you’re ordering up your favorite craft beer, don’t fret.
It’s not that this is their only washing mechanism: They just want you to maximize your beer-tasting experience. Copyright 2017 Scripps Media, Inc. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed.
Is beer lacing good or bad?
What is Beer Lacing? The phrase “Beer Lacing” is thrown around a lot in the beer community. You may have heard of or used the term in a conversation. But what does beer lacing mean? Beer lacing is the tendency of beer to smear white foam or laces on the sides of the beer glass.
- After a sip of beer, the head drops with the level of the beverage.
- While at this level, the head leaves a white ring of foam.
- And as you continue drinking, the beer forms more and more laces with every sip.
- Beer lacing indicates that your glass is clean and your beer is protein-rich.
- This article will discuss how to improve beer lacing and how it compares among different beer styles.
But first, what causes beer lacing?
Why is beer with foam better?
This is why tilting a beer glass to avoid foam actually makes you bloated
If you’ve ever tried your hand at bartending only to realise you are unable to pour a without forming a head of – you are in luck.A beer sommelier has revealed to the proper way to pour a beer – and it turns out that a head of foam is actually a good thing when enjoying a nice cold one.According to Max Bakker, the first and only Master Cicerone in – a certification which means he has an exceptional understanding of all things beer related – without that collar of foam, a beer is not a beer at all.And beer is actually the result of pouring a beer incorrectly – or pouring a beer with minimal foam. According to Max, carbon dioxide that has not been released into a glass when pouring a beer, which is what happens when you pour beer into a tilted glass slowly, has a disastrous effect when it settles in your stomach.
Stella, John Smith’s and Newcastle Brown Ale to name a few Tom Wren/SWNS Varieties on Morrisons home brand lager and bitter Tom Wren/SWNS Various cans of Tennent’s Lager and ale, some featuring their “Lager Lovelies” range, which was discontinued in 1991 Tom Wren/SWNS Marks & Spencer beers, Crown Lager and Tesco value lager Tom Wren/SWNS Watneys Pale Ale, Younger’s Tartan Ale and a variety of Holsten Pils cans to name a few Tom Wren/SWNS Tennent’s Caledonian Lager and Sam Smith’s Alpine Lager Tom Wren/SWNS Darwin Lager, Worthington’s E ale and Harp Lager among others Tom Wren/SWNS Carlsberg Special Brew, Ansells Bitter and Younger’s Monk Ale among others Tom Wren/SWNS Nick West has spent 40 years collecting over 9000 beer cans Tom Wren/SWNS West was once voted “Britain’s Dullest Man” in a newspaper pole and is a member of the Dull Men Club, who release a yearly calendar Tom Wren/SWNS This slow-pour means the has nowhere to go – which leads to bloating when the liquid is disturbed in your stomach and the remaining carbon dioxide is released – especially once you add food to the mixture.
The solution? Pouring a beer down the side of a glass with vigour. (Business Insider) Pouring a glass of beer incorrectly leads to bloating This method of pouring a beer ensures that the CO2 is broken out into the glass – meaning the bloating that occurs when drinking a beer that was not poured properly doesn’t happen.
So before you try to send back a beer for having too much foam, remember that the foam is actually protecting you from feeling full and uncomfortable. (Business Insider) The correct way to pour beer is by tilting the glass and pouring with vigour The foam always turns into beer anyway, according to Max.
Does beer foam waste beer?
Calculate your savings – Beer foam problems – Save money with DraftMore There can be many reasons for that, but in most cases it is because the CO2 pressure in the beer keg is not correct according to the temperature of the beer in the keg. Some people adjust the CO2 pressure either up or down when the temperature fluctuates, but people do not always remember to do this.
That is how the problems start with either over carbonated beer foaming too much or under carbonated flat beer. The solution is a DraftMore which automatically adjusts the right CO2 pressure in the beer keg depending on the temperature. With a DraftMore you will serve a perfect draft beer every time! Any bar that do not have their system in correct balance between temperature and pressure will experience beer foam issues when pouring beer.
Foaming issues will lead to beer wastage, in places where the system is not balanced correct, there can be a waste from 5 – 15 % beer wastage. A lot of beer will be pulled down the drain. DraftMore will balance your system and save you money each day. : Calculate your savings – Beer foam problems – Save money with DraftMore
Do bubbles mean dirty glass?
The Bubbles Test – Dirty beer glass! The most obvious sign that your glass isn’t clean is bubbles on the inside of the glass and the foamy ‘head’ of the beer is weak or lacking. The image above is an example, it means that your glass is not ‘beer clean’ and you need to change your cleaning methods.
What ruins a beer glass?
Some culprits that cause a dirty glass include fat or grease-based residue from food, lipstick, and dish soap residue. Some of these are less visible on a glass, but they speed up the release of carbonation making beer go flat quickly.
Why do you tilt beer glass?
THE POUR – You’re looking for a 45 degree angle tilt on your glass, that allows the beer to perfectly touch the wall of the glass and fall in. The idea is to avoid your beer from frothing or releasing too much carbonation at the start of the pour. THE TURN Once the glass is three-fourths full, turn it upright to get a decent head, which adds the aroma and mainly the roundness to any beer.
Why is beer kept in dark bottles?
Why beer bottles are usually brown glass Have you ever cracked open a bottle of beer, poured it into a clear glass and left it outside sitting in the sun? Maybe you’ve come back to it after a while to take a sip – and something isn’t quite right. If you’ve experienced this funky taste, it’s from a chemical compound similar to the stinky smell skunks produce.
- That’s why the beer brewing community has dubbed this process “skunking.” Chuck Skypeck, the technical brewing projects director at the, has owned and operated craft breweries for 21 years.
- He said the cause of skunking wasn’t really understood until around the 1960s.
- When hops in beer are exposed to strong light, a photooxidation reaction takes place, creating the compound 3-methyl-2-butene-1-thiol.
To prevent the process of skunking from occurring, beer brewers have opted for darkly tinted glass. It’s why you see so many beers in brown glass bottles today. “It’s a simple reaction that creates what most people see as an undesirable flavor,” Skypeck said.
- So, anything that shields the beer from that will preserve its flavor, so it is served as the brewer intends.” Hence the popular choice among brewers: brown.
- But that’s not the only color seen in beer bottles; some come in green glass, too.
- What’s behind that choice? Given that green is not as protective from light, the reason for its use is mainly marketing, according to Skypeck.
“If you look to see what brands are in green glass, you’re going to probably find mostly heritage brands that have been around for a while,” he said. “A fair amount of European brewers use green glass. Their green bottles are their image. And again, we’re talking decades ago, there was a certain association of quality and uniqueness with green glass.” And if that green glass wasn’t tinted dark enough to prevent skunking, Skypeck said consumers back then might simply say, “Oh, look, this tastes different.
It’s coming from Europe. It must be good.” When it comes to choosing glass as the packaging material over plastic, Skypeck said not only is glass perceived as more environmentally friendly and looks higher quality to consumers, but it prevents the beer from becoming stale, as plastics let out the carbonation in beer and let in oxygen over time.
Cans are also a popular choice for packaging and don’t let in light, but skunking is still possible due to a process known as thermal aging. More studies are needed in this area, according to Skypeck, to determine which packaging is optimal to prevent skunking.
As for any other guidance on storing beer to prevent skunking, staling or any changes to the taste, Skypeck has a simple rule: cold and dark. “Beer is basically water, barley, sometimes wheat, hops and yeast – it’s a food product. And just like any other food product, it’s subject to losing its freshness,” he said.
“What really causes any food product to lose its freshness – besides this photochemical reaction we talked about – is exposure to oxygen and exposure to (warmer) temperature.” If you’re ever up for a wasteful at-home experiment, place a beer in sunlight for a couple of hours, and you can taste skunking for yourself.
Why is there a magnet in my beer glass?
How fast can you pull a pint? well with the Bottoms Up Beer Dispenser System you can do 44 pints a minute and when pushed it can reach speeds of up to 56 pints a minute, That’s seriously fast. Couple that with the fact that it gives you a ‘perfect’ pint every time. Well the answer is magnets. The glasses have a fridge magnet style floppy circular strip that sits on the hole at the bottom. The hole is surrounded by a tin ring, when the cup is placed on the dispenser it pushes up the magnet breaking the seal and beer is allowed to flow into the cup.
- The beer dispense is set to a timer, in the same way a soft drinks machine is at a McDonalds.
- When the beer has finished dispensing you take the cup out straight up and the magnet flops straight onto the ring covering the hole creating a seal.
- Be warned though if you push your finger through the hole and disturb the magnet then the beer will obviously fall out.
But you gotta try it at least one time though hey? Heres a video below from the inventor and owner Josh Springer for a visual on how it works. Hope this answers your questions. If you are scared that machines are taking your job then you had better brush up what it takes to be a great bartender,
How often should bars clean beer lines?
Common Beer Line Cleaning Questions – Q: Why do dispensing lines have to be cleaned? A: Regular cleaning of your beer lines, faucet, and keg coupler is crucial for maintaining a sanitary environment, preventing the build-up of yeast, mold, and bacteria.
- This regular cleaning assures that bacteria does not have the opportunity to reach levels that might cause off-flavors and shorten the shelf life of your beer.
- Line cleaning with the proper equipment and chemicals will also eliminate the build-up of calcium oxalate or “beer stone”, a mineral deposit that builds up when dispensing draft beer.
If left unchecked, these beer stones can flake off into your beer causing an off taste, as well as creating an unsanitary surface that can harbor microorganisms. Q: How often should I clean my lines? A: In commercial environments, line cleaning should be performed at least once every two weeks.
For home environments that may not cycle through as much beer and have a much shorter beer line, we recommend that you clean your lines every time you switch out a keg or every five weeks, whichever is shorter. Q: How do I clean my lines? A: There are several different methods for cleaning beer lines, including hand pump cleaning kits, pressurized cleaning kits, and re-circulating cleaning pumps.
To use a hand pump cleaning kit :
Shut off your CO2 Regulator, untap the keg, and remove the beer line from your keg coupler. Attach the beer line to the cleaning kit coupler. Pour the measured amount of the cleaning chemical into the open cleaning bottle, following the manufacturer’s specifications on the label. Add water as directed, ensuring that you do not overfill the container. Insert the pump and twist to tighten. Pump to pressurize the cleaning bottle. Place a bucket or pitcher under the faucet and open the faucet to allow the cleaning solution to flow through the line. Pump until dry. Rinse the cleaning bottle and fill it with clean, cool water and repeat the cleaning cycle to rinse the line of cleaning chemicals.
To use a pressurized cleaning kit :
Fill the cleaning bottle with line cleaner solution. Secure the bottle cap onto the mouth. Detach the keg coupler from your keg and attach it to the cleaning bottle cap, tapping it as if it were a keg. Place a bucket or pitcher under the faucet to catch the cleaning fluid and pull forward on your faucet handle to begin. Your CO2 canister will force the cleaning solution through the keg coupler, through the beer lines, out of your faucet and into the bucket. Pump until dry. Rinse the cleaning bottle and fill it with clean, cool water and repeat the cleaning cycle to rinse the line of cleaning chemicals.
To use a re-circulating cleaning pump :
Connect keg couplers with cleaning cups or cleaning adapters. Fill a bucket with warm water and place the “in” hose into the water. Connect the “out” hose to the dispense system and turn the pump on, flushing beer out into a second bucket until the line runs clear with water. Rinse out this second bucket and refill with an appropriate line cleaning mixture. Place the “in” hose into this bucket, creating a closed loop. Turn the pump back on and allow this mixture to recirculate for a minimum of 15 minutes. Refill the first bucket with fresh cold water and place the “in” hose back in this bucket. Pump cold water from the first bucket into the second bucket to rinse the system, refilling the first bucket and dumping the second bucket as needed.
No matter which cleaning method you use, be sure to soak the keg coupler and faucet in a mixture of water and cleaning chemicals, scrub them with a cleaning brush, and rinse them clean with water. This is also a good time to check that all parts are in good condition and do not need to be replaced.
Why do beer glasses matter?
The Importance of Beer Glassware Just like with wine, different styles of beer are best suited to specific types of glassware. The shape and size of a glass will allow specific styles of beer to best showcase their aromas, flavours, carbonation, colour and head, allowing you to enjoy the beer at its very best.
What is the best thing to wash beer glasses in?
Tips For Keeping Your Beer Glasses Clean – Keeping your beer glasses clean involves more than just rinsing them in soapy water or sticking them in the dishwasher. We recommend following a strict and specific cleaning routine incorporating an alkaline based cleaner and then a rinse and a dry. If you fail any or all of the cleaning tests above then these tips are a must, but even if your current cleaning methods scrub up ok, you still might learn a few new strategies from the following.
Always wash your beer glasses by hand. While it’s tempting to simply dump them into the dishwasher with all your other dishes, they will often be left with an invisible film/coating. And over time, regular dishwasher use may start to leave your glasses with a foggy or cloudy type appearance that’s hard to remove.
Don’t use the same cleaning sponge that you use for your other dishes, make sure you have a sponge or cloth just for your beer glasses.
Wash your beer glasses first up and separately to your other dishes. If you wash them in the murky, oily water that results from washing other dishes previously, then they’ll be left with a thin film of oil once they’ve dried.
An effective cleaning strategy for a glass ‘gone bad’ is giving it a white vinegar soak then putting it in hot soapy water and rinsing and drying it thoroughly.
Dishwashing soap can be ok for washing you beer glasses, but you will need to make sure you follow a meticulous rinsing and drip drying routine as dishwashing soap contains oils and may create suds that cling to the glass and stop your beer from frothing up with a nice head.
An alternative to dishwashing soap when hand washing your beer glasses is to sprinkle a bit of bicarb soda on them, give them a scrub, then rinse them.
Avoid washing your glasses only in water, as this can lead to a bio-film build up over time.
When drying your beer glassware, use the drip dry method and rest them upside down on a tray with suitable ventilation.
Get in the habit of rinsing your beer glasses with cold water prior to drinking from them. This will get rid of any dust and cool your glass down prior to pouring your beer.
If you’ve been using the same beer glasses for a long time all of the above tips may not be enough to keep things ‘beer clean’, in which case it may be time to buy some new glassware. We humbly recommend the Black Hops Rastal Craft Master glass, a great all round option for most beers.
We hope this article has been useful in helping you identify if your beer glasses are clean or need some polish and in giving you some simple strategies to make sure you keep them in a ‘beer clean’ state. If you’ve got any feedback feel free to leave a comment below.
How do you clean cloudy beer glasses?
Apply a drop of distilled white vinegar to the cloudy glass and rub a small area with a microfiber cloth. If the area is clear when the glass is dry, you will be able to clean away the cloudiness. If it is still cloudy, the glass is permanently etched.
Is alcohol or vinegar better for cleaning glass?
The Spruce / Letícia Almeida A lot of things will work as a homemade glass cleaner, from rubbing alcohol to vinegar to soapy water, but single ingredients alone tend to have their own drawbacks. For example, vinegar does a decent job removing dust and water spots, but it doesn’t cut through a lot of sticky stuff and tends to streak more than other cleaners.
Does baking soda clean cloudy glass?
How to Clean Cloudy Glasses With Baking Soda – White vinegar works pretty well for most build-up issues. But not everyone keeps a jug lying around to clean glassware, Thankfully, you have other options. Baking soda is a master at cutting through some pretty gnarly stuff, including mineral deposits.
- Create a paste of equal parts baking of baking soda and Dawn dish soap.
- Cover all the cloudiness with the paste.
- Let it sit for about 15 minutes.
- Fill the sink with hot water. Add a tablespoon of baking soda and a few drops of Dawn.
- Agitate the water to mix and add the glasses.
- Soak for an additional 15 minutes.
- Wash and dry.
You can also scrub the cloudy spots with toothpaste and a soft toothbrush or a bit of Bar Keeper’s Friend.