1. Replace the bottle cap. If you are sure that you can't finish a bottle of wine, put the cork back immediately after pouring it. If the cork can't be put back, you can use plastic wrap. Of course, the resealed wine needs to be in an upright position to minimize the contact area between the wine liquid and oxygen.

2. Change the big bottle into a small bottle, because the shortcomings of this big bottle with a net content of 750ml make the small bottle have room to play. As a half of the net content of 750ml large bottle, 375ml small bottle can be said to be a suitable choice among many small containers. If you haven't finished drinking the wine in the big bottle, you can choose to pour it all into the 375ml small bottle and seal the bottle with a cork. After drinking, just rinse the bottle with clear water, and then put it in a ventilated place to dry naturally for the next use.

3. Refrigeration method, refrigerator is an ideal place for daily refrigeration. The low temperature in the refrigerator can effectively reduce the rate of chemical reaction and slow down the oxidation rate of wine after opening. In addition, cooling can also inhibit the activity of acetic acid bacteria and slow down its influence on wine.

4. Vacuum preservation method, usually using vacuum valve and vacuum plug, the wine stored in the refrigerator after vacuum can be preserved for a longer time, and it can be preserved for 3-4 days if a good vacuum tool is selected.

5. Inject inert gas. The principle of this method is generally to inject inert gas such as nitrogen into the wine bottle to protect the wine, because the inert gas covering the wine surface can isolate oxygen from it. This method requires more professional tools than the previous preservation tools, and the cost may also rise. At present, the common pressure bottle openers on the market have corresponding functions. This bottle opener has a needle, which can pierce the wine stopper to take out a certain amount of wine, and finally inject inert gas such as nitrogen to protect the wine from oxidation.

These tips can only temporarily delay the life of a bottle of wine, or you need to drink it as soon as possible to be worthy of the taste of red wine.

Red wine, which kind of red wine goes bad quickly? 1. Pi Nuo is the most sensitive red wine to air. 2.8- 10 years old wine; Three lighter red grape varieties, such as Gehenna, Sangiovese and Zinfandel.