In the protection of wine, wine cork is the most important line of defense.
The size, infection and quality of cork will affect the quality of wine. The cork of high-quality wine is usually engraved with brand name and year. The high-grade aged wine will be changed once after 30 years. The new cork has not only the original year, but also the year of changing cork.
When purchasing, it is necessary to check whether the cork year information is consistent with the label year information. In addition, we should pay attention to the fact that the stoppers of immature wine are longer than those of ordinary wine. If a valuable wine doesn't use cork as a cork, you can almost pass it off.