1, time for drinking red wine before going to bed:1-drink about 50 ml of red wine half an hour before going to bed. Red wine contains melatonin, a sleep aid hormone, which can regulate sleep cycle and treat insomnia.

2. Preservation method: At room temperature, red wine (dry red) can be preserved for one week (in a cool place) after being opened. It is best to drink it in two or three times. In addition, you can listen to the sound of opening a bottle when opening it. The crisp sound indicates that the bottle stopper is well sealed and the wine quality is well preserved (so is the new wine). However, it is recommended to drink it on the same day, so as to ensure its best taste and freshness.

3, buy red wine, you can start from two aspects:

One is to judge from the content of the label. The contents of wine labels should be complete and accurate, mainly including the following contents:

1) Product name. According to the definition of product, the name should be "wine".

2) Alcohol content. The alcohol content of wine should not be less than 7%(V/V).

3) Implement standards. The wine standard in China is GB/T 15037.

The second is to judge from the internal quality. The quality of wine includes hygiene, physico-chemical and sensory, among which sensory index is the most comprehensive and effective index to reflect the quality of wine.

4, the sensory indicators of wine should be reflected from the following three aspects:

1) appearance. The appearance of wine is mostly clear, transparent and shiny, and the color is consistent with the name of the wine.

2) Aroma. Wine is a fermented product, and its aroma should be fruity, fermented and aged. These aromas should be balanced, harmonious, elegant and pleasant.

3) taste. The taste of wine should be comfortable and pleasant, with delicate and soft aroma and long aftertaste.

Data expansion:

Red wine is a kind of wine, not necessarily red wine. The composition of red wine is quite simple, it is a fruit wine brewed by natural fermentation, and the most content is grape juice. There are many ways to classify wine. According to the color of finished products, it can be divided into red wine, white wine and pink wine.

Red wine can be subdivided into dry red wine, semi-dry red wine, semi-sweet red wine and sweet red wine, while 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 called pink wine and rose wine. Yangmei wine is called Yangmei fruit wine. There is also a blueberry red wine made of blueberries.

References:

Baidu encyclopedia-red wine