The unopened milk tea can be stored for a short time at room temperature, mainly because the temperature changes greatly at room temperature, which is easy to breed harmful substances such as bacteria. Generally, if the temperature is higher than 20℃, the unopened milk tea can be stored for about 2 hours, and if it is lower than 20℃, it can be stored for about 4 hours. A little bit is basically made of matcha powder, and the shelf life is about 6 months. If the unopened milk tea is stored in the refrigerator, it can generally be stored for about 24 hours, but it is recommended to drink it as soon as possible.