Cold brew tea can be drunk in moderation. Cold brew tea is tea whose infusion can be completed with cold water. Compared with the traditional steeping process, the processing of cold brew tea is characterized by extending the steaming time of fresh leaves, reducing the degree of fine kneading, and drying by high fire. Part of the cold brew tea through a special process, in 15 ℃ water within 5 minutes can be completed steeping, greatly reducing the production time, in line with the modern concept of fast and convenient life. In terms of nutrition, cold brew tea and traditional tea is not too different, both contain more tea pigments, tea polyphenols, alkaloids and caffeine and other substances, which may be reduced due to high temperature treatment of vitamin C content, but the overall nutritional value is not much different. Since cold brew tea also contains caffeine, it is recommended to drink it in moderation. Excessive intake of cold brew tea may lead to insomnia, mental stimulation, etc. At the same time, gastroesophageal reflux, gastritis, gastric ulcer patients drinking strong tea is likely to lead to aggravation of the symptoms, causing discomfort, especially the need to reduce the amount of intake.