1. Remove impurities, because red wine is usually placed flat or tilted 3 degrees. After a long time, there will be precipitation, oak cork residue and so on. Directly open the wine to drink, these impurities make the wine turbid and affect the taste, so it is necessary to precipitate and sink the impurities, and even some red wines need to be filtered with filter paper.

2. Soften tannins. Everyone knows the importance of tannins to the taste of red wine. The purpose of pouring red wine out to sober up is to contact oxygen, soften tannin and improve the quality and taste of red wine.

3. release fragrance and remove impurities. By shaking the red wine, the odor and methanol originally sealed in the wine are volatilized. And wine aroma is released to further improve the taste of red wine. This is actually very important, which can be said to be one of the main purposes of sobering up.