After you open a bottle of wine, does the alcohol in it start evaporating? (2024)

Dear Dr. Vinny,

After you open a bottle of wine, does the alcohol in it start evaporating? If you leave an open bottle open for three hours, would the alcohol go from 14 percent to 12 or less?

—Daniel A., Panama

Dear Daniel,

Let’s start with how the alcohol content is determined. During fermentation, the sugar in the grapes is converted into alcohol. Once the wine is bottled, the alcohol content doesn’t change any further.

But once you open a bottle of wine and expose it to air, things start to change, and you’re right that evaporation comes into play. Both the water and the alcohol in wine are subject to evaporation, and typically the alcohol will evaporate somewhat faster than the water does. But it really depends on a lot of different variables, including the temperature, the airflow and how much of the liquid’s surface area is exposed to air. Also, the water would evaporate faster in dry air than in humid air.

In most cases, while some evaporation would take place, its effect would be negligible. It would take days, weeks or even longer to get any measurable difference in the alcohol content. Because wine doesn’t have much alcohol in it by volume—typically from about 12 to 16 percent—it’s not going to evaporate nearly as quickly as would the same amount of rubbing alcohol. In fact, wine that’s just sitting there evaporating would probably turn into vinegar before it would become alcohol-free.

If you want to speed up the evaporation of alcohol, you could increase the wine’s surface area, airflow and temperature. You could even put it in a pan and start to heat it up. And if you take three bottles of red wine and heat it, set it aflame and evaporate it by half, you’ll have a terrific red wine reduction sauce to braise short ribs in.

—Dr. Vinny

After you open a bottle of wine, does the alcohol in it start evaporating? (2024)

FAQs

After you open a bottle of wine, does the alcohol in it start evaporating? ›

But once you open a bottle of wine and expose it to air, things start to change, and you're right that evaporation comes into play. Both the water and the alcohol in wine are subject to evaporation, and typically the alcohol will evaporate somewhat faster than the water does.

Does wine lose alcohol after opening? ›

So, yes, alcohol does evaporate but the evaporated amount is negligible. The exact amount of evaporation depends on a number of different variables, including the following: Temperature – higher temperatures will increase the rate of evaporation—however, the presence of humidity can counterbalance this effect.

Can alcohol evaporate in an opened bottle? ›

Once the bottle has been opened, the liquid is, of course, exposed to oxygen. If that exposure continues, a slow process of evaporation begins. Have you ever seen a vintage bottle of whiskey with a noticeably lower fill line than usual? If so, you've seen firsthand the effects of evaporation.

How long does it take alcohol to evaporate from wine? ›

Hotter temps will burn off more alcohol, and a bigger pan with more surface area will produce the same result. As a reference, here's a helpful rule of thumb: After 30 minutes of cooking, alcohol content decreases by 10 percent with each successive half-hour of cooking, up to 2 hours.

What happens to wine after you open the bottle? ›

Once open, wine typically lasts for a few days. If it goes bad, it may alter in taste, smell, and consistency. In rare cases, spoiled wine can make a person sick. Wine is a popular alcoholic beverage, but if a person does not store it correctly or drink it promptly, it may spoil.

Does uncovered alcohol evaporate? ›

If you don't have a tight seal, your alcohol will evaporate.

Does opened alcohol lose alcohol content? ›

“Bad” is a spectrum, though—whiskey will never spoil, per se—you can drink a glass of opened whiskey 20 years from now and it will not kill you. You might not enjoy the experience, however, as the alcohol content will be lower from evaporation and the flavor profile will have turned.

At what point does alcohol evaporate? ›

Its molecules will evaporate not just when alcohol reaches its boiling point, a chilly 173 degrees Fahrenheit compared to water's 212 degree Fahrenheit boiling point, but any time it is exposed to the air. Despite its ability to dissipate, “it's impossible to cook out all of the alcohol [in a dish],” says McGee.

How long can alcohol evaporate in an opened bottle? ›

Both spirits will experience some evaporation and flavor degradation as time goes on. Wine remains drinkable two to five days after opening. If it's been longer, you should use the old wine in cooking. Beer fares the worst: You should drink that brew within a few hours or a day after you pop the top.

How to prevent alcohol from evaporating? ›

To prevent evaporation, simply cap the container you are storing your solutions in (or prepare them fresh each time), and storing at cold temperature can also decrease evaporation rate. Proper storage at ~14 degrees C and ~70% humidity will prevent corks from leaking.

Does 100% alcohol evaporate? ›

But for the pure alcohol, there's nothing to slow it down: every ten molecules are alcohol molecules. And we know that pure alcohol evaporates faster than pure water, so it goes faster.

Can toddler eat food cooked with wine? ›

The choice is up to you. You may choose to use cooking methods that help to reduce the alcohol content and use less alcohol in a dish to make it safer for your child. Otherwise the safer option is to choose to leave out alcoholic drinks when preparing food for babies and children.

Can you drink opened wine after 2 weeks? ›

Generally, an opened bottle of red wine can last for up to 5 days if stored properly in a cool and dark place with a wine stopper or cork in place to prevent excess oxygen from getting in. For white wine, it can last for up to 3 days under the same storage conditions.

Should I refrigerate wine after opening? ›

But you shouldn't be afraid of storing opened red wine in the fridge. Cooler temperatures slow down chemical processes, including oxidation. A re-closed bottle of red or white wine in the fridge can stay relatively fresh for up to five days.

Can you drink 20 year old red wine? ›

A 20-year-old wine should recover its composure within a week or two, while a 30-year-old wine may need up to a month. For a wine over 40 years old, let it sit for four to six weeks–or until it becomes clear. Once you have opened your wine, it should be served as soon as possible.

Can I drink a glass of wine left out overnight? ›

Can I drink wine left out overnight? Yes, you can. But remember that whether overnight at room temperature ruins your wine depends on factors like type, temperature, and exposure to air. It might lose freshness or vibrancy, but generally, it won't be harmful to drink.

Will alcohol in a glass evaporate overnight? ›

Experiment: Smell and taste a partially empty glass of straight whiskey left to stand overnight. The alcohol is gone, but some water remains, as does a stronger smell of character aromas.

How long does it take for alcohol to evaporate 70%? ›

50% or 70% Isopropyl Rubbing alcohol evaporates in minutes (5-7 min) after disinfecting the surface. The Fumes are not hazardous, so you can safely use it repeatedly.

Do you have to be 21 to buy cooking wine? ›

Anyone can buy cooking wine, and this is because it is designed to be unfit for beverage use. Cooking wine must have a warning inscribed on its label, indicating that it is for cooking and not drinking. Yet, underage kids still buy this wine simply for its alcohol content.

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