How should the wine that has been opened be preserved?
Generally speaking, wine can be stored for up to 3-5 days after opening. The basic principle of storage is to isolate or reduce the contact between wine and oxygen. The easiest way is to put the cork back into the mouth of the bottle and store the wine upright in a suitable environment. You can also choose to change the bottle, that is, to change the remaining wine into a smaller clean glass bottle with the mouth sealed for storage. For friends who often drink good wine, the best way is to use vacuum equipment to remove and seal the oxygen in the bottle, so as to form a vacuum environment in the bottle, but it should be noted that this method is not applicable to sparkling wine.
Don't be a "shopkeeper" after buying wine. Only by mastering these little knowledge of wine storage can wine bloom its charm and add icing on the cake for happy gatherings.
A big mistake in wine storage
Refrigerators are the first choice for many people to store wine, but in fact, refrigerators are not suitable for storing wine. The refrigeration temperature and humidity of ordinary refrigerators cannot meet the conditions for long-term storage of wine. Moreover, frequent opening and closing of the refrigerator door in daily life will also make the temperature inside the refrigerator fluctuate greatly, and the cork is easy to deform due to thermal expansion and contraction, resulting in excessive oxygen entering the interior of the wine bottle, thus affecting the quality of wine.
Five principles of wine storage
1. Constant temperature
The best storage temperature of wine is 10-15 ℃. Too high temperature will accelerate the aging of liquor, and make the aroma and flavor of wine become faint. When the temperature is too low, the ripening speed of wine will slow down, and the aroma will become relatively closed; If the temperature is lower than its freezing point for a long time, the liquor will even freeze and become larger, resulting in the cork being pushed out or the bottle breaking.
2. Constant humidity
The best environmental humidity for wine storage should be maintained at about 70%. If the humidity is too high, the wine label is easy to rot and mold. And the humidity is too low, which will lead to the cork drying and loss of elasticity, unable to seal the bottle mouth, and accelerate the oxidation process of liquor.
3. Avoid light
The quality of wine is easily affected by light. Whether it is natural light or artificial light, their ultraviolet rays will react with phenolic substances in the liquor, thereby accelerating the aging of wine. If you are exposed to strong light for a long time, the skeleton of the wine will gradually loosen, and the fresh fruit flavor will dissipate, and even develop an unpleasant smell. Therefore, when storing wine, we must choose an environment away from light.
4. Shock absorption
Frequent shaking or shaking will disturb the sediment in the liquor, and may even produce more complex chemical reactions, which will change the taste and flavor of the liquor. Therefore, in daily life, we should try to avoid putting wine next to the "earthquake source" such as washing machine and dishwasher.
5. Place horizontally
Generally speaking, the wine should be placed horizontally to ensure that the cork can contact the liquor, so as to prevent it from drying and deformation, and allow oxygen to take advantage of it. If it's only stored for a short time and you need to open the bottle for drinking in the near future, it's OK to choose to place it vertically during storage. As for wine sealed with screw cap, there is no worry about cork deformation, so there is no need to pay attention to whether it is placed horizontally.