Red wine is toxic after three months of opening, so it is best not to continue drinking at this time. Red wine contains high tannic acid, which is easily oxidized when it comes into contact with air, which will lead to deterioration of red wine, so try to drink red wine after opening the bottle within one week.

Unopened red wine has no taste after three months. If you encounter high temperature environment, it may be a little sour. If you don't finish drinking a bottle of wine that day, you can put it in the refrigerator and keep it for about ten days. If it's more than ten days, don't continue drinking.

Precautions for saving:

1. In general, red wine should be sealed with a cork after opening and stored in a cool place. The shelf life is 3 to 5 days. In the absence of a refrigerator, store it in a room with a room temperature of about 2 1℃ for ventilation.

2. Boxed wine Boxed wine has adopted a new packaging method. However, the wine is not really packed in a box, but in a bag, and the box is just its outer packaging. One advantage of putting wine in a bag is to prevent air from entering the bag to oxidize the wine. The shelf life of this wine is about one month.

People's Network-How long can wine (red wine) be preserved after opening?