Yangmei should be fresh, intact and fully ripe, otherwise the wine will have a sour flavor. The prunes should be cleaned because there will be a lot of dirt on the surface of the prunes, dust, insect eggs, spider webs and so on. After cleaning, the prunes must be dried on the surface. Put the prunes on a basket, arrange them one by one, and put them in a ventilated place to dry naturally, knowing that there is no moisture on the surface when you touch it.
Yangmei, if not directly eaten, used to brew the prunes is not to use water or salt water to clean. Because this is easy to soak the prunes, so that the soaked prune wine has a rotten flavor, affecting the drinking experience.