How to clean vodka and alcohol at home. Differences between drinking alcohol and technical Alcohol of poor quality

Mikhail Ostashevsky

For the competition "From the first person"

When I was in my third year at the military school, one of the chemical laboratories was equipped with Polish equipment. There are beautiful glass shelves along the walls, and for greater importance, bottles with various reagents were placed on these shelves. For complete beauty.

During laboratory studies, I noticed that next to the table at which we were sitting with our best friend Slavik Mamaev, there was a one-liter bottle on the shelf, on the label of which was the inscription “Phenolphthalein”. That phenolphthalein comes in an alcohol solution, I knew, while still working as a laboratory assistant at one research institute. Taking the bottle off the shelf, he opened the stopper and sniffed. And so it was. Then I handed the bottle to Slavik and offered to smell it too.

- Let's take it! - Slavik said inspiredly, inhaling the alcohol aroma through his nose and blissfully rolling his eyes.

- Firstly, we cannot take the entire bottle. Lab assistants or a teacher can check the class after class and, if they find an empty space on the shelf, make a noise. Secondly, phenolphthalein is very insidious in its effect on the body.

- Harmful, or what?

- Well, how do you, Slavik, say. It may not be harmful. Maybe even useful to someone. In pharmacies, it is sold as a medicine.

- Then we will definitely pick it up! At the same time we will heal! Let's combine business with pleasure!

After my friend inhaled the coveted aroma, his stomach started working instead of brains. Slavik really wanted to drink. And he could no longer think of anything else.

- Do you know the medical name of phenolphthalein?

- No! Tell!

- Purgen!

With this word, judging by the reaction to what I said, Slavik was clearly familiar. He immediately wilted.

- You, Vyacheslav Sergeevich, don't get oxidized right away. Don't put an extra burden on your heart. We'll do it smartly. During the break, I will ask the laboratory assistants for an empty bottle, pour ourselves the lion's share and test it on someone. If everything goes well, we'll drink tomorrow!

During the break, I took an empty half-liter bottle from the girls and filled it to capacity with the desired liquid.

- Who are we going to test on? - asked Slavik impatiently.

- Don't be in a hurry. Let's test it on Ded. Only a little later. Closer to dinner.

"Grandfather" was a cadet named Nevrov. He was extremely lazy, and the normal position of his body was recumbent. Less often sedentary, but always leaning against something.

Before supper, I began pouring liquid into a soldier's metal mug. For testing.

- Where are you pouring so much ?! He's just a little bit enough! Leave us more! - Slavik was indignant.

- Don't push! You need to test thoroughly! What if the effect depends on the dose ?! All of a sudden, he won't get anywhere with a little bit, and then we will use the normal number of "missilemen" to go to a separate ward of our medical unit!

"Rocketeers" were the names of those at the school who had an upset stomach. They took a shameful smear and placed them in a separate ward for two weeks. Under the castle. Until the results of the analysis become known. And they fed extremely poorly. They could not eat most of the food they cooked.

I poured almost half a mug, then took a little in my mouth and spat it out. I made Slavik do the same. We hid the mug of liquid on the stairs near the attic door. And they went to look for Grandfather. And they found it right away. No problem. Lying like a log on his bunk. Where else could he be?

I pulled the subject aside and asked:

- Grandfather! Doesn't we smell of anything?

Then he breathed on him.

- Ouch guys! You drank somewhere! - Nevrov said very sadly.

- Don't be sour! We left you!

Having grasped the meaning of what I said, Grandfather came into a very agitated state. He began to stupidly poke around in all directions, until we directed him, like a torpedo, in the right direction.

On the staircase, I handed the tester a mug and warned that it contained not vodka, but pure alcohol. Seeing the amount of liquid, Grandfather became even more excited.

- Well, guys ...! I never ...! I’ll give you everything ...!

Nevrov took the mug in his hand and, once again assessing the amount of liquid, asked hopefully:

- And to have a bite ...?

“Maybe you’ll bring the girl here too?” You will smell your sleeve! You are not in the Philharmonic!

The advice was efficient. The lazy grandfather rarely washed his uniforms and his sleeves were perfumed. What are the sleeves! All clothes! From top to bottom. Rolling his eyes, he drank the contents in one gulp and, with a noise, began to draw in the native smell of his unwashed body. Straight from under the arm.

We returned to the company. After dinner, Grandfather was under our constant and close attention. Apart from the fact that he was decently drunk, nothing happened to him. Nevrov was sitting in Lenin's room, leaning against the wall and giggling, quietly muttering something under his breath.

- He amuses himself, you bastard! - Slavik said indignantly. - And nothing bad happens to him! On the contrary, he feels good now! Unlike us! It would be better if you had a drink yourself!

- We'll have a drink tomorrow! Where are you in such a hurry?

Until lights out, we carefully, but unobtrusively watched Grandfather. And everything was fine with him. Slavik, remembering the amount of alcohol Nevrov had drunk, sighed sadly.

In the morning our deputy platoon commander, namesake of my friend Slavik Mayorov, began to count those lined up for exercise.

- One, two, three, four, ..., twenty three! One, two, three, four, ..., twenty three! Squad leaders! Who is absent?

- Nevrova!

- Well, Grandfather! Well, the net! In the evening, you’ll wind me ten kilometers around the stadium!

The platoon went to the exit and Mayorov continued to be indignant.

- Slavik! Whom are you looking for? The orderly asked.

- Neurov from charging sucks!

- Yes, he's in the toilet. As he sat down on the point at four in the morning, he cannot get off.

Together with the platoon lock, Mamai and I rushed to the toilet. Look at the work of their own hands.

Grandfather was sitting on his glasses and reading the newspaper. To keep his legs from getting numb, he fastened his belt to the wall of the toilet and held on to it like a passenger of an ancient tram.

- Grandfather! To charge!

- I can't Slavik! I'm carrying! Ate something obscene at dinner!

“You see,” I said to my friend later, “you kept saying,“ Let's have a drink! Let's have a drink! ”And the alcohol turned out to be of poor quality! Not drinking!

Counterfeit alcohol can contain life-threatening substances in varying proportions. In order not to pay with health, when choosing alcohol, use several rules from Rospotrebnadzor.

What to look for in order not to buy a fake

1. Place of purchase

No questionable stalls and markets, and even more so hand-held or online purchases. The store should be located in a building that is associated with a land plot, that is, kiosks and other temporary buildings - not right away.

Also, the store must have a license for the right to retail alcohol. This document can be found on the information stand in the sales area. If there is no license, look for the store in the list of licensees on the website of the Unified Social Portal of the Alcohol Market.

2. Price

The minimum prices for the sale of spirits - vodka, brandy, cognac and other alcohol with a strength above 28% are set by the state Order of the Ministry of Finance of Russia dated April 4, 2017 No. 57n "On Amending the Order of the Ministry of Finance of the Russian Federation No. 58n dated May 11, 2016" On setting prices no lower than which purchases (excluding imports), supplies (excluding exports ) and retail sale of alcoholic beverages with a strength of over 28 percent "... This means that the price for half a liter of vodka or alcoholic beverages simply cannot be less than 205 rubles, and the same volume of cognac will not be sold for less than 371 rubles.

It is also helpful to see the average price per bottle of a particular brand of drink. This can be done, for example, on the website of the Bristol retail chain or through the Foodil service. If you see a crazy discount on a product, you should think about its quality.

3. Appearance of the bottle

If the counterfeiters made the bottles themselves, they can be very different from the original ones. For example, the shape of the shoulders can be smoothed out, while the real one will have clear edges.

In order not to be mistaken, before buying, go to the sites indicated above and check what the original bottle looks like, and then compare the photo with the product in the store. Also check the embossed lettering on the sides of the bottle and on the bottom. On fakes, they can be blurry and unreadable, or absent altogether.

If the counterfeit supplier does not produce bottles, but buys used original bottles, the fake can be distinguished by the cork and film on the neck.

In original bottles, the film is stretched perfectly, without folds and protrusions, the inscriptions on it are easy to read and are located evenly. If there are any flaws on the film, connector or lid, such as uneven edges or bumps, this is a reason to be on your guard.

The cap on the bottle must not rotate. The same with the safety ring: if it twists with the cap instead of breaking, leave the bottle in the store.

4. Information on the label

First of all, check if the label is evenly pasted, for tears and wrinkles. If everything is clear, see the information. The label must state Rospotrebnadzor recommendations for the purchase of alcoholic beverages following:

• Name of production.
• Volume and strength as a percentage.
• Composition.
• Mass concentration of sugar, if any.
• Country of origin and location of manufacture.
• Information on contraindications and dangers of use.
• Expiry date, if any.
• The date of bottling is on the label on either side, on the bottle itself or on the cap on the neck.

If you buy, the Russian counter-label must contain all of the listed information that matches the front one.

5. Excise stamp

The excise stamp is printed on special paper with colored fibers, all numbers and codes on it are clear, clearly visible and easy to read. The stamp must be glued absolutely evenly.

You can check the brand through the Anti-Counterfeit Alco application from the Unified Social Portal of the Alcohol Market. Download it and use it directly in the store.

How to recognize a fake if a bottle has already been opened

The last line of verification is the quality of the product itself. There are some signs by which you can identify low-quality alcohol, but if you have no experience in tasting, the risk of error is very high.

In appearance

Counterfeit alcohol can be identified visually. Strong drinks must be homogeneous. If the liquid in the bottle is stratified, this should alert you.

As for drips on the walls of the glass, this is found in wines and cognacs and has nothing to do with the quality of the drink. These, as they are also called, "cognac legs" indicate the density of the drink and depend on the percentage of alcohol, the amount of residual sugar in the wines and aging in the barrel or on the lees.

Does not indicate a fake and the color of the wine: it depends on the grape varieties and production technology.

By smell

It is rather difficult to identify counterfeit wine by smell. Sergei says that some bottles contain “cork disease”. During the processing of the bark to make the cork, a chemical compound can form, which gets inside the bottle and spoils the drink.

Sergey Popov

If the base of the cork that touches the wine smells of wet cardboard, rotten wood, or wet autumn leaves, the wine will not be enjoyable. However, this is a natural defect and it is difficult to get poisoned with such a drink.

Other aromas of wine, even not very pleasant ones, cannot serve as a sign of counterfeit.

Sergey Popov

You can smell the aroma of gasoline or burnt rubber in the wine - this is a characteristic of the Riesling variety from some countries. And dry wines from the Gewurztraminer or Torrontes varieties often have notes of rose, apricot, peony, nutmeg and other shades. And this does not mean at all that flavors have been added to the wine.

If you don't like the aroma of the wine, Sergei advises you to find the characteristics of the variety on the Internet. Maybe it should smell like that.

To understand the aroma of strong alcohol, you can grind it in your palms: the alcohol will evaporate, leaving the notes of the drink itself. If the smell is chemical, this should alert you. But do not confuse foreign aromas with the smell of alcohol - this is a natural component of the drink and does not indicate a fake.

Taste

Sergey claims that it will be difficult for an ordinary consumer without it to distinguish a fake from the original.

Sergey Popov

If you add a little more caramel color to the same cognac - this is caramel, it is allowed to add it to cognac and whiskey in certain quantities - this will improve not only the color, but also the taste. It's like with tea: when it is with sugar, it seems "tasty", since a person does not feel bitterness, viscosity, astringency. And if he drinks it without sugar, the astringency can cause rejection.

Sergey explains that a person can only notice a fake if he has a certain tasting experience. For example, if you are used to drinking one brand of cognac all the time, and then instead of your favorite drink, you got a fake.

But at the same time, a drink of a different brand can also cause rejection in him: the taste will seem unpleasant. And this does not mean at all that another cognac is fake and of poor quality, it is just new for a person.

Thus, only a professional can surely identify a fake by color, smell and taste. However, it is worth paying for expensive alcohol, if only because you are not so at risk of poisoning.

To create fake drinks, low quality ethyl alcohol is used with a high content of fusel oils and aldehydes, which will reward you with headaches and a wild hangover. But even this is not the worst thing. Much worse if the drink contains a high content of methyl alcohol.

What is the danger of methyl alcohol and can it be recognized

Methyl alcohol Methyl alcohol poisoning diagnostics: opportunities and prospects- This is a toxic substance, in case of poisoning with which you can partially or completely lose sight due to irreversible atrophy of the optic nerve, earn pneumonia, acute liver or kidney failure. In the worst case - to die on the first or second day after libation.

For poisoning, only 5-10 ml of a 40% solution of methanol is enough, and for a lethal outcome - 15-30 ml.

Despite the statements on the Internet, it is almost impossible to distinguish methyl alcohol from ethyl alcohol at home. So, you can often hear that when igniting a drink with methanol, the flame will have a green tint. However, in one YouTube video, this method gave absolutely no results.

At the same time, there is not a single real confirmation that this or other methods really work.

How to understand that you are poisoned with methyl alcohol, and what to do

Poisoning symptoms may appear within 40 minutes to 72 hours after taking methyl alcohol.

With a mild degree of poisoning, it is easy to confuse them with the usual: intoxication is replaced by nausea, vomiting, abdominal pain, sometimes fog in front of the eyes or flashing flies. Dizziness, weakness, depression of consciousness, palpitations may be present.

In the case of moderate severity, vision deteriorates over several days until it completely disappears. Severe cases are characterized by acute abdominal pain, dilated pupil, sharp agitation, convulsions with loss of consciousness, impaired breathing and cardiac activity.

It is better not to assess your condition on your own and if you have abdominal pain or visual impairment, immediately call an ambulance.

You can also clean vodka and alcohol at home. But let us warn you right away: this will not save you from the deadly methyl alcohol. And from harmful impurities - easily. Additional purification will improve the quality of the vodka and prevent hangover (if you drink in reasonable amounts).

Part 1. Vodka from the store

You bought a bottle from a store and suddenly wondered if it was properly cleaned. You can play it safe by purifying the vodka yourself. Home cleaning may well remove impurities in the product. There are several ways to purify vodka. They can be used both individually and in combination.

Filtration

This is the simplest: take a paper towel, roll it up with a funnel, on the bottom - a piece of cotton wool, you can pour more activated or simple charcoal, put another funnel made of paper on top. And slowly, in a thin stream, pour vodka through this structure.

A good water filter can be used to filter the vodka.

It is convenient to use paper coffee filters instead of paper towels.

You can take activated charcoal, you can buy charcoal tablets in a specialized store to clean the moonshine, or you can remove the cooled coal from the barbecue in the country. It is better not to take only purchased coals for barbecue - they give an unpleasant smell to the product.

Infusion

You can add the same coal to vodka and insist on it for several days. Tightly closed containers of vodka should be shaken twice a day. After infusion, it is better to filter the vodka, as described above.

Milk and proteins

Ancient folk way... You need to add milk to vodka or egg white... Shake. Protein or milk curdles, binds impurities and fusel oils and will precipitate. And you will filter the vodka and drain the sediment.

Potassium permanganate

Add 2-3 grams of potassium permanganate to vodka. Insist during the night. A sediment should form at the bottom. Then we filter the vodka, leaving a sediment in the bottle.

Freezing

Vodka is poured into a bag and placed in the freezer. In our freezers, vodka does not freeze, its freezing temperature is below 20 degrees. But the impurities turn into small pieces of ice. They must be filtered first through a fine sieve, then through a paper filter.

Part 2. Alcohol

The days of Royal alcohol are long gone. And you can't buy edible alcohol in stores right now. But sometimes they get it anyway. In different ways and for different purposes, but ethyl or medical alcohol gets to consumers. Rare extremals drink it clean. Usually alcohol is diluted to a vodka strength of 40 degrees. This must be done carefully. And the resulting product must be cleaned. Since when diluting even pure alcohol with pure water, impurities are still released.

Step 1. Distinguish from methyl (technical)

It is very important. In general, it is better not to buy alcohol in a dubious place. Although if the official sale is prohibited, then all the places are questionable. Sometimes alcohol is bought from distilleries, this is a pretty reliable place. However, if drinking alcohol comes in contact with you:

Smell. Bad alcohol will smell like acetone. But just do not bring your nose close to alcohol - you will burn your mucous membrane. You need to bring the container with alcohol to the side of your nose, no closer than 15 centimeters, and wave your hand at yourself alcohol vapors. This is how professional tasters evaluate aromas, it is safe. Methanol itself does not differ from ethyl alcohol, but its impurities differ.

Set it on fire. Ethanol burns with a blue flame, technical - green.

Heat the copper wire. If a hot copper wire gets into alcohol, a sharp unpleasant odor can be emitted - this means that you have methyl alcohol. Food alcohol will not react to it.

Step 2. Find good water

Not boiled or distilled. It is best to take bottled water and filter it additionally. Or spring water - and also filtered. Does not fit mineral water with added salts.

Step 3. Glucose

You can buy it at the pharmacy or cook it yourself. 1 kg of sugar must be diluted in a liter of water and put on fire. Boil, constantly removing the white foam. When the foam stops forming, the syrup is ready.

Step 4. Calculation of the quantity

Approximate proportion: 2 parts alcohol to 3 parts water. That is, for 100 ml of alcohol, you need to take about 150 ml of water. On the Internet, you can easily find a calculation table, from it you will understand how much water is needed at a certain strength of alcohol and for a certain strength of a drink in the end. The above proportion is for 96% alcohol and approximately 40 degree vodka.

Step 5. Connection

Pour the required amount of water into a container, add a spoonful of glucose and stir. Then pour the alcohol into the water.

Important! You need to pour alcohol into the water, and not vice versa. In the latter case, you will end up with a whitish liquid that is not drinkable.

After you have introduced alcohol - mix the resulting liquid. Be aware that its volume may be less than the combined volume of water and alcohol. Part of the volume of liquid is lost during the reaction.

Step 6. Purification and filtration

You need to add charcoal to the alcohol, you can even have a few activated tablets. Leave for 2-3 hours, then filter through a thick cloth or cotton wool. Additionally, you can use any method for purifying vodka from those described in the first part of the article.

Step 7. Exposure

Pour the diluted vodka into bottles and let stand for 2 days. Sometimes it is recommended to defend for a week.

It is no secret that low-quality alcohol causes many diseases and even death of people. But alcohol is often used in medicinal purposes, including the recommended intake in the form of pepper and various tinctures. In addition, alcohol is used for external use (disinfection of wounds, cauterization, etc.), so the harmful substances contained in low-quality alcohol can penetrate the human body through the skin. Therefore, it is very important that the alcohol used is free of toxic substances and harmful impurities.

However, despite all the measures taken to purify alcohol during manufacture (during the preparation of the mash, during fermentation and during distillation), it is still impossible to obtain a pure product. This also applies to wine.

For the purification of alcoholic beverages, it is recommended to use filters containing activated carbon. It not only cleans the drink, but also removes unpleasant odors and improves the taste. In addition, the wine is clarified, getting rid of the color absorbed from the outside.

In Russian distillation, coal has been used for filtration for a long time. In 1785, the St. Petersburg pharmacist T. E. Lovits, who later became an academician, was the first to discover the purifying power of coal in the distillation of alcohol. In his experiments, Lovitz distilled alcohol over coal powder and obtained a product that was more pure than with conventional distillation. The same scientist discovered that simple shaking of wine without heating and rectification improves the taste and color of the drink and eliminates unpleasant odors.

In addition, the following discovery was made: filtration through charcoal can be effectively carried out by first diluting the alcohol with cold boiled water up to 40% or after the first distillation, when the proportion of alcohol contained does not exceed 45%. Nice results at the same time, they justify themselves by the fact that the higher the concentration of alcohol, the stronger it retains impurities in itself and, accordingly, the more difficult it is to purify. In this process, it is important to keep the alcohol temperature as low as possible. Soon, this discovery began to be applied in wineries. As a result, the quality of the wines has improved significantly.

The activated carbon filter, as mentioned above, can be made by ourselves. In this case, you can use both activated carbon, bought directly from the pharmacy, and homemade, made of wood.

In the latter case, when selecting certain species of trees, you can get alcohol with different taste qualities that no other manufacturer has.

To make a filter at home, you need to take a pan of a suitable size with a hole in the bottom. A thin layer of cotton wool and a piece of gauze are laid on the bottom of the pan. On top of the gauze, activated carbon is poured at the rate of 50 g per 1 liter of alcohol intended for filtration. The charcoal is covered with gauze edges so that it does not float to the surface. After that, you can pour alcohol into the prepared container.

In order for the alcohol to be cleaned as best as possible, it is recommended to pass it through a similar filter 2-3 times. The finer the powder, the denser the filter will be and the filtration process itself will be slower, but the alcohol passed through the filter will also be better cleaned.

Another way to purify alcohol is to pour activated carbon into a container with alcohol at the rate of 50 g per 1 liter and shake the resulting mixture well. This shaking is recommended to be done several times during the day. After that, alcohol along with activated carbon infused for about 1 week, after which it is filtered through gauze or filter paper.

Cleaning alcohol at home gives very good results.

It should be remembered that different varieties woods have unequal adsorbing properties, that is, the composition of the substances they absorb is somewhat different. This is the reason for the taste and quality differences of wines purified by different filters.

Practical edition "Treatment with activated carbon"

The best advice you can give about alcohol is simply "Don't drink at all!" - and, at the same time, it is not feasible. There are very few teetotalers in our society, and all the others, at least sometimes, are wrapped up in the wine and vodka department. Therefore, the next good "alcoholic" advice would be more realistic: "Drink in moderation and only high-quality alcohol."

Even vintage cognac, expensive Cuban rum and wine aged in the cellars of France cannot be called healthy drinks, but still the harm associated with their use is just dust in comparison with the harm of cheap fruit and berry "wines", all kinds of "mumbles", moonshine and even more so substitutes. There are several varieties of such drinks - and each type is harmful in its own way:

Fruit and berry "wines" (popularly: "ink")- very common and widely used. There is nothing natural about them; "Ink" is a mixture of alcohol, sugar, flavors and dyes, sometimes - low-quality fruit and berry syrup. Such drinks not only "hit the liver" stronger than high-quality alcohol, but also worsen the hangover syndrome, cause accelerated addiction and have a very bad effect on the brain and the nervous system in general.

Penny liquors and other "chemical mixtures"- drinks that don't even pretend to be wine or something as natural. These are liqueurs, brandy and sangria, which are 100% "chemistry" and alcohol. You can recognize them by their too bright to be at least a little natural, color, strong and unnatural smell (strawberry, chocolate, cherry), very sweet taste. As in the case of supposedly wine, these drinks are characterized by the digestive system, metabolic processes, strongly and quickly increase blood sugar levels, and destroy the nervous system. And all this - in addition to the natural damage caused to the body by alcohol.

Moonshine and other "homemade" drinks- are one of the most common causes of alcohol poisoning. In addition to the fact that such drinks are very strong (their goal is obvious: to get drunk as quickly as possible), they are made without observing any technology, which means that as God wills it. V best case a person will have a severe hangover, at worst - no less severe poisoning. Foreign impurities side effect on all internal organs of a person.

Alcoholic surrogates- "outcasts" even in the most unassuming "alcoholic society". All kinds of alcohol-containing lotions, colognes, medicines, technical liquids. In such substances, absolutely everything has a destructive effect on the human body. For example, ethylene glycol, which is part of the brake fluid, breaks down into toxic acids in the body and causes serious poisoning with an 80% probability. Dichloroethane, which is part of solvents, can kill even with very little use. Even the seemingly harmless components of cosmetic and medicinal alcohol-containing preparations can greatly irritate the mucous membranes of the digestive tract, causing severe pain.

The impact of low-quality alcohol on the body

When using any of the varieties of low-quality alcohol the impact can be expressed in three different effects:

Instant poisoning. As they say, no comment. Most often it is caused by the use of alcoholic surrogates or moonshine, counterfeit alcohol, but the excessive use of regular strong alcohol can also be the cause.

Gradual poisoning. The constant and frequent use of alcohol-containing substances, which contain toxic substances even in weak concentrations, causes the effect of gradual poisoning. As a result, poisoning occurs without an obvious reason and is caused by the final excess of the dose of the poisonous substance.

Accumulation of destructive effects. The difference between this effect from the previous one is that its end is not poisoning, but the development of serious diseases. If a person often and in large quantities drinks "chatter" for several years, it usually ends in a hospital bed - a diagnosis that greatly shortens the life of a person.

How to find out low-quality alcohol?

Most of those who regularly consume low-quality alcohol have no illusions about the contents of the bottle, but in some cases, people who care about their health can face "alcohol poisoning." To avoid this, you need to be able to identify low-quality alcohol. The following characteristics of the drink should alert you:

• Very low price. Alcoholic beverage has a certain cost, and if the final price is very low, it means that the manufacturer has saved a lot. On what? On natural ingredients, on high-quality alcohol.
• Suspicious bottle. Handicraft production can impersonate with a crooked or pasted label, an unformatted cork, etc.
• Presence of sediment and other suspicious inclusions "in the light". If the drink is clear, shake the bottle and carefully examine the liquid to light. There should be no sediment, no floating flakes, no grains or foam in it.
• Strong unpleasant odor- good orientation; this is what synthetic harmful components in alcohol often give themselves out.