The soaking time of prunes needs to be determined according to the temperature of the water. If you use cold water to soak the umeboshi, it will take about 2 hours; if you use hot water to soak the umeboshi, it will take about 15 minutes; if you use warm water to soak the umeboshi, it will take about 40 minutes. It should be noted that if you soak the prunes in cold water, although it takes a long time, it will not destroy the nutrition of the prunes, but will make it more elastic and taste better. If you use hot water to soak prunes, although the time is short, it will cause nutrient loss and the taste will deteriorate. Therefore, it is recommended to soak the prunes in warm water, which can not only reduce the soaking time but also effectively remove the stains on the prunes themselves. The soaking time of prunes needs to be determined according to the temperature of the water. If you use cold water to soak the umeboshi, it will take about 2 hours; if you use hot water to soak the umeboshi, it will take about 15 minutes; if you use warm water to soak the umeboshi, it will take about 40 minutes. It should be noted that if you soak the prunes in cold water, although it takes a long time, it will not destroy the nutrition of the prunes, but will make it more elastic and taste better. If you use hot water to soak prunes, although the time is short, it will cause nutrient loss and the taste will deteriorate. Therefore, it is recommended to soak the prunes in warm water, which can not only reduce the soaking time but also effectively remove the stains on the prunes themselves. 1. 2-3 hours. If you use cold water, soak the dried prunes for 3 hours. If you use warm water, it will take about 2 hours to soak. If you use boiling hot water, it will take about half an hour to fully soak. However, it is not recommended to soak it directly in boiling hot water, which will destroy its taste and nutrients. It is better to use warm or cold water. 2. Shaoxing, Ningbo, Jinhua, Lishui in Zhejiang, Fuzhou in Jiangxi and other places are called "dried plum vegetables", Taizhou in Zhejiang are called "dried vegetables", and Meizhou in Guangdong are called "dried plum vegetables". There are dried mustard greens, dried rapeseed, dried cabbage, dried winter vegetables and dried potherb mustard, most of which are homemade at home. The method is to dry the vegetable leaves, stack them yellow, then add salt to pickle them, and finally dry them in the sun and put them on the altar.