It is not recommended to drink red wine after one month of opening.

Stored for a long time after opening the bottle, it may produce some toxic and harmful substances, which may affect your health after drinking. Red wine is mainly made from fermented fruits such as grapes or blueberries, which contain a certain amount of alcohol, so you should control your intake and avoid drinking too much at once.

Red wine can be subdivided into dry red wine, semi-dry red wine, semi-sweet red wine and sweet red wine, white wine can be subdivided into dry white wine, semi-dry white wine, semi-sweet white wine and sweet white wine, pink wine is also known as rosé, rosé wine, prune wine is called prune red wine, and there is also a kind of blueberry red wine made of blueberries.

Composition

The composition of red wine is quite simple, it is a fruit wine brewed by natural fermentation, containing the most grape juice, accounting for more than 80%, followed by the natural fermentation of the sugar inside the grapes to become alcohol, generally 10% to 30%, the rest of the material is more than 1,000 kinds of important 300 kinds. Other important components of red wine are tartaric acid, pectin, minerals and tannins.

While the proportion of these substances is not high, it is the decisive factor in the quality of wine. The quality and taste of red wine, because they can present an organizational structure of balance, so that people have endless enjoyment on the palate, most of the sugar in the wine is the fermentation of the residual. If fermentation is artificially terminated before it is complete, some of the sugar is not converted by the yeast and remains. Some winemakers also add grape juice or concentrated grape juice to the wine to increase the sugar content.