Recap the bottle
One of the most common mistakes we usually make when wondering how to preserve opened red wine is leaving the bottle uncovered for hours or days and trying to drink it later. Oxygen, although necessary for wine to breathe, is its worst enemy in the long term, since accelerates oxidation and degrades both color, aroma and flavor. The simplest and most effective way to preserve opened wine is to immediately recap the bottle. The ideal is that we use the original cork itself, making sure to insert it through the part that was originally in contact with the wine. However, if the cork is broken or we simply want to take conservation to the next level, there are more effective solutions, such as tspecial silicone plugs, manual or electric vacuum preservers and even more sophisticated systems that allow oxygen to be extracted from the bottle before storing it. The more hermetic the closure is, the more days we can enjoy the wine in optimal conditions.Put the bottle in the refrigerator
Although it may surprise those people who are not familiar with conservation techniques, one of the keys to how to preserve an open bottle of red wine is to put it directly in the refrigerator. It must be taken into account that the cold slows down the chemical reactions caused by oxygen and, consequently, allows the durability of the wine to be prolonged.Of course, it is worth keeping in mind that red wine is not served as cold as white or rosé. The recommended serving temperature is usually between 12 and 16 ºC, depending on whether we are talking about a young, aged or reserve wine. Therefore, the ideal is to remove the bottle from the refrigerator a few minutes before serving so that it recovers its proper temperature.
Store the bottle upright
Before opening a bottle of wine, we all know that it is advisable to store it horizontally. This keeps the cork in contact with the liquid and prevents it from drying out. However, when we have already uncorked the cork and are considering how to preserve an open bottle of wine, the rule changes. In this case, it is best to keep the bottle in a vertical position. In this way, we can reduce the surface of the wine that remains in contact with the air, which slows down the oxidation process. Although wine, once opened, cannot be stored for months, this simple measure can help keep it in more than acceptable conditions for a few more days.Do not expose it to the sun or light sources
Another of the great threats to wine, in addition to oxygen, is light. Exposing an open bottle to sunlight or intense artificial sources can accelerate its degradation process. The riboflavin present in wine is especially sensitive, since, in contact with light, can trigger chemical reactions that cause unpleasant odors —such as notes of onion or garlic—and a dull or bland taste.
For this reason, we can say that, in addition to covering the bottle and storing it cold, it is advisable to avoid any source of direct light. The refrigerator is an ideal place not only because it allows you to control the temperature, but also because keeps the bottle upright and in a dark and stable environment. The key is to minimize the factors that usually alter the integrity of an opened wine.
If you have ever wondered how to preserve opened red wine without losing quality, keep this tip in mind: the less you expose the bottle to light and heat, the more likely it will retain its properties for longer than usual.