quality guarantee period
Red wine is not the older the better. The year on a red wine is made from the grapes of that year. Most of the wines (99%) do not have the ability to age, and the suitable drinking period varies with the wine, generally between 2 and 10 years. Only a few very good wines have the ability to age. Some French and Italian wines can age for decades or even hundreds of years. Many of the wines of Bordeaux are still drinkable even if they have been kept for more than a century. Wine is suitable for aging and needs tannin (i.e. tannin), and Cabernet Sauvignon (grape variety) is the most suitable grape variety for aging due to geographical factors and its characteristics.
Generally speaking, the suitable temperature for wine storage is 10 ° C. generally speaking, the temperature between 7 ° C and 18 ° C will not be damaged. The temperature fluctuation in the cellar should be avoided as far as possible: the unstable temperature will affect the quality of wine. It is necessary to avoid long-term storage of wine above 20 ° C or below 0 ° C as far as possible. In this way, stones will precipitate in wine, so as to reduce the acidity of wine.
In order to keep the storage temperature constant, it is necessary to avoid short-term temperature fluctuations. Generally, the higher the temperature, the faster the wine ripens; when the temperature is low, the wine will grow slowly.
Of course, the change of ripening speed is different from the grape varieties and brewing methods used in wine making. In general, the appropriate storage temperatures required for different wines are as follows:
半甜、甜型红葡萄酒 14－16℃ 干红葡萄酒 16－22℃
Semi sweet and sweet red wine 14-16 ℃ dry red wine 16-22 ℃
半干红葡萄酒 16－18℃ 干白葡萄酒 8－10℃
Semi dry red wine 16-18 ℃ dry white wine 8-10 ℃
半干白葡萄酒 8－12℃ 半甜、甜白葡萄酒 10－12℃
Semi dry white wine 8-12 ℃, semi sweet and sweet white wine 10-12 ℃
白兰地 15℃以下 香槟（起泡葡萄酒） 5-9℃
Brandy below 15 ℃, champagne (sparkling wine) 5-9 ℃
The theoretical temperature is about 12 ℃ or 7-18 ℃.
It is required to avoid light, because ultraviolet rays will make wine precocious.
Avoid vibration, place horizontally, keep cork moist, prevent air from entering, avoid excessive humidity, and prevent bacteria from growing.
Storage location recommendations
Cool and ventilated place, constant temperature wine cabinet, cellar, etc
How to keep red wine after opening
The opened wine should be corked back, put the bottle into the refrigerator and placed horizontally.
Usually, white wine can be kept in the refrigerator for a week after opening.
Red wine is usually kept in the refrigerator for 2-3 weeks after opening.
First, the air in the bottle is pumped out, and then the bottle is plugged. In this way, it can be kept for about a week. But the more economical way is to change the remaining wine into a small bottle, so that there is no air in the bottle, so that it can be stored for another 24 hours. However, the wine that has been opened should be drunk as soon as possible, because the longer the wine is kept, the faster its flavor will be lost. In addition to the location of preservation, the way of placing wine bottles should also be noted. Wine must be placed horizontally, and the mouth of the bottle should be tilted down slightly. This not only helps to precipitate the dregs, but also moistens the cork with the liquor. If a certain humidity is maintained, the mouth of the bottle will be tightly blocked by the cork.