Portulaca oleracea can be soaked in hot water or cold water. If you use hot water to soak Portulaca oleracea, you need to soak it for 10-20 minutes; If you use cold water to soak Portulaca oleracea, you need to soak it for 30-60 minutes. Dried Portulaca oleracea is rich in dihydroxyethylamine, malic acid, glucose, calcium, phosphorus, iron, vitamin E, carotene, vitamin B, vitamin C and other nutrients, which are usually used for frying and eating.