What is the maximum maximum time that red wine can be left out after opening?

Usually it can be left for 1-7 days. The situation will be different for different red wines. Let's talk about the principle first:

The wine after opening the bottle is mainly due to "oxidation", so it can no longer be drunk. Red wines usually have tannins, which are antioxidants themselves, and the higher the tannin = the higher the "astringency". So keep the first point in mind:

Wines with a high "astringency" will last longer than those with a low "astringency". The second point is that because it is oxidized, the less oxygen is exposed after opening, the longer it can be stored, and the screw cap is much better than re-plugging the wooden cork and sealing, so the screw cap usually lasts longer than the wooden cork.

Take a chestnut: a bottle of screw-cap wine with high tannins "astringency" (such as an American or Australian "Petite Sirah") may last for another 5-7 days after opening. A bottle of corked wine with low tannins and low "astringency" (such as the French Burgundy Pinot Noir) may only last 1-2 days after opening.

Expanding, if you are worried that the red wine will not be opened and drunk, I strongly recommend that you prepare a little boxed wine at home, because the boxed wine uses a vacuum bag and an airtight valve, so after opening and pouring out a part of the wine, there will be no air entering the bag, thus prolonging the shelf life of the wine after opening. Boxed wine can even be stored for another 3-4 weeks after opening.

There is no picture and no truth, the picture below is a boxed set of Australian imported products bought by Taobao, and I opened a glass of wine poured in the 6th week, and the color is still bright purple.

The vast majority of red wines can be resealed and refrigerated in the refrigerator for about 3 days after opening. But in reality, it still depends on the specific situation.

Red wine is generally more difficult to preserve without a specific storage place. Because the preservation of red wine has strict requirements for temperature, humidity and shade. In professional wineries, the temperature needs to be controlled at 10 to 14 degrees Celsius and the humidity should be maintained at 70%.

In ordinary households, the wine seal is first stored in a corrugated box or Styrofoam box with heat and light insulation effect, and then placed in a cool and ventilated place with little temperature change, and can also be stored for a long time.

For open and unfinished wine, the ideal way is to drain the air from the bottle and then cork it, so that it can be stored for about a week. However, it is more economical to replace the leftover wine with a small bottle that does not hold air in the bottle and can be stored for another 24 hours. However, it is important to drink an opened bottle as soon as possible, as the longer it is stored, the faster its flavor will be lost.

In addition to the location of storage, it is also important to pay attention to the way the bottles are placed. The wine must be placed horizontally, preferably slightly downward, which not only helps the sedimentation of the lees, but also the cork can be moistened by the wine and maintain a certain humidity, and the mouth of the bottle will be tightly corked.

Usually at room temperature, red wine (dry red) can be stored for one week (in a cool place) after opening. Two or three times will be enough to drink it up. The sound of the bottle opening can also be heard.

The crisp sound indicates that the cork has been sealed and that the quality of the wine has been well preserved (as is the new wine). I don't know if you're buying a Changyu wine (it's not a Master Sommelier or Cabernet Sauvignon, it's a pity). Based on your situation, if the cork is well capped, you can continue drinking.

However, the taste and freshness are not as good as before.

Red wine can generally be stored for 3 to 5 days after opening, of which the sparkling wine has the shortest storage time, and it is best to drink it as soon as possible within a day, otherwise the sparkling wine inside will disappear; White wine, on the other hand, can be stored for about 3 to 4 days after opening; Red wine can be stored for a longer period of time, lasting 3 to 5 days after opening.

How long a red wine can be kept after opening is directly related to the quality of the wine. After the wine is opened, oxygen enters the bottle and is absorbed by the wine, and the tannins and flavor substances in the wine are oxidized in contact with the air, and the flavor deteriorates. High-quality wines are oxidized by air much faster than average-quality red wines.

High-quality wines are stored longer after opening than mediocre wines.

Different styles of wine have different shelf life after opening

1. White wine.

If you don't finish it after opening the bottle, you should reseal the cork and refrigerate it, and it can generally be stored for 3 days depending on the acidity, but this type of wine is just for freshness, so it is better to drink it as soon as possible while it is fresh.

In addition, some sweet white wines are made with a lot of sulfides, which can be stored for a longer time. Some white wines are full-bodied but not acidic, such as Chardonnay from warmer regions, and are therefore stored for 3-5 days.

2. Red wine.

Red wines are generally less acidic than white wines, but red wines contain antioxidant tannins. Generally speaking, the higher the acidity, tannins, and alcohol content of red wine, the more resistant it is. In general, red wine should be corked after opening, placed in a cool and dark place or in the refrigerator compartment upright, and drunk within 3-5 days.

3. Sparkling wine.

When the bottle is opened, the carbon dioxide dissolved in the wine is released as bubbles due to the reduced pressure, which releases the aromatic substance and creates a pleasant experience. The bubbles in sparkling wine tend to dissipate over a few hours, so it's best to drink them all at once.

Sparkling wine that cannot be drunk should be sealed with a cork in time, refrigerated and drunk as soon as possible. Special stoppers for sparkling wine can also be used, which grips the mouth of the bottle firmly and reduces the loss of bubbles.

4. Sweet wine.

These sweet wines are generally not high in alcohol, but they are very high in sugar and acidity, and can be resealed after opening and can be refrigerated in the refrigerator for 5-7 days, or even longer, depending on the sugar and acidity.

Red wine can be stored in the refrigerator for about two weeks after opening, and about a week if it is white wine.

Once the wine has been opened, the cork should be put back in time and the bottle should be placed horizontally in the refrigerator. If possible, evacuate the air in the bottle before putting the cork on it, which will be more conducive to the preservation of the wine.

How to preserve red wine.

1.Red wine is stored in a lying room. In this way, the wine stopper will remain moist and will not come into contact with the outside air, which is more conducive to the preservation of the wine.

2.When storing red wine, pay attention to the humidity, preferably at 13 degrees. Of course, if you keep it at home, it is difficult to achieve such humidity, so just put it in a cool, dark place.

If you don't have a suitable place to store it at home, you can also put the wine directly in the refrigerator and store it upright.

3.Wine must be stored away from light, preferably in a place without light. Also, don't put the wine under the fluorescent lamp, as the smell of the wine will change.