Froth foam is normal in the two wine fermentation process. The two white bubble is a fine white membrane. When wine is finished two times, it will naturally settle to the bottom and will not affect drinking. Wine wine is a kind of fruit wine made from grapes. Most historians believe that Persia may be the first country to make wine in the world.
There are more than 8000 grape varieties that can make wine all over the world, but there are only about 50 grape varieties that can make good wine, which can be divided into white grapes and red grapes.
There are many varieties of wine. Due to different grape cultivation and wine production process conditions, their product styles are also different. （PuTaoJiuErCiFaJiaoYouBaiSePaoMo）