I. Variety characteristics Whether a wine has typical variety characteristics is very important for judging its quality. For example, PinotNoir wine, if it only has a strong oak aroma and does not reflect the typical red fruit aroma of black Pi Nuo, then its variety characteristics are not obvious and it is not a good wine. Second, balance refers to the relationship between various elements of wine-fruit aroma, alcohol content, tannin, acid, sugar, body and aftertaste, which complement each other. Nothing is too abrupt. For example, if a wine will cause a sharp burning sensation in your throat, it means that its alcohol content is too high and there is not enough fruit aroma, flavor and body to coordinate with it. If a wine has a strong oak flavor, it also shows that its balance is not enough, and there is not enough fruit flavor to match the oak flavor. Third, strength is for aroma and flavor. The richness of wine aroma and flavor is mainly determined by the variety itself and the brewing method. So what kind of wine has the best richness? If you put a glass of wine on your chest, you can still smell its aroma, which means it has excellent aroma. If a wine can bring a variety of flavors to people's mouths, it means that its flavor is better.