“I heard, that the tea was brewed longer than 3 minutes of harm. Is it true? All recipes known to me recommended brewing for at least 5 minutes.”
Depending on the brewing time, tea has different properties and has different effects on the body. A 3-minute infusion is stimulating, because it contains the most caffeine. Tannins penetrating later make, that tea becomes a calming drink. Leaving the leaflets longer than 5 minutes causes further release of tannins as well as various ones, insoluble compounds , which may be harmful, when we drink e.g.. a few glasses of strong tea a day, especially brewed in Turkish”. In general, the longer brewing, the worse the tea. The worst and tasteless one is the essence that has been kept for a long time.