Common wine stoppers include natural cork stoppers, synthetic stoppers, screw stoppers, etc., in addition to glass stoppers and crown caps. The oldest wine stopper is a natural cork, which has been used for thousands of years.

Natural cork stopper, this long-established bottle stopper is made of oak bark (and a small amount of other tree species), and the entire cork is directly washed from the bark. This is the natural cork stopper. According to the density of the lenticels in the ravines of the bark, natural cork is divided into many grades, and the price difference is more than 10 times. Wine stoppers made of natural oak cost more. It has a fatal flaw, it can make wine with a bad cork smell. The smell of the bad cork is not refreshing, like the smell of newspaper or cardboard wetted by rain. The source of this substance is the reactant of the disinfectant in the oak cork and the mold that has not been completely removed, called TCA (chlorobenzene Methyl ether), will cause the wine to taste bland, and the rancid taste swallows the fruity and floral aromas. The Portuguese Cork Association summarized a blind tasting of 2800 bottles of wine held in Napa, California by the Wine Spectator in 2005. The report stated that the use of cork will cause the wine to have a spoilage rate of 0.7% to 1.2%, and even Some people say there is a risk as high as 5% to 10%.

Synthetic stopper, a rubber product, is a common substitute for traditional cork stopper because of its similar appearance and function. But because it can only maintain the antioxidant time of wine for a short time (about 18 months), drink it as soon as possible after bottling; although it avoids the interference of TCA, it sometimes leaves some chemical rubber taste in the wine, so it is not suitable for use. The impression of the consumers and the drinkers was mediocre.

The screw plug can achieve a good bottle mouth sealing effect, which greatly eliminates the concerns of manufacturers and buyers about the "cork smell" and hidden dangers of oxidation. The famous Hogg Wine Cellar has done a 30-month research experiment to compare the effects of natural oak cork, synthetic cork and Steven screw plug. It turns out that the screw plug has complete advantages compared with the first two. It makes consumers lose the romantic scene of enjoying the opening of the bottle, but in comparison, this seems to be far less than maintaining the quality of the wine. After opening the bottle, you can discover the potential of the wine in the glass to continue to evolve and the long aroma And the graceful quality of refreshing and pleasant, should be more charming.

The glass stopper is a combination of glass and a rubber ring on the inside, while avoiding wine oxidation and TCA pollution. The product was introduced to Europe in 2003, and more than 300 wineries have been used. But there are two main reasons that affect its promotion: the high cost and the complete manual sealing of the bottle cost 70 cents each, and the corresponding filling equipment has not been popularized on a global scale.

Crown caps are often used to seal sparkling wines. At first, this bottle cap was only used for sealing during fermentation, and was often replaced with a cork before shipping. But recently, many manufacturers directly use the crown bottle cap for sale. Although it is easy to open, it greatly reduces the atmosphere and mystery of using champagne in the party.