Are cold tea and tea brewed the night before drinkable?
From the angle of nutrition and hygiene, I don’t think that tea brewed over night is suitable for drinking. As for cold tea, it is drinkable if it doesn’t deteriorate. But do not drink the remaining tea being placed for a long time. The canned tea currently sold in market is cold tea, and it is drinkable if strictly sterilized. Moreover, the aged or weak people, and those with poor internal organs must not drink cold and over-night tea.
