Freshly boiled water has a higher oxygen content than reboiled or water that has been kept at/near boiling for a long time. For best tea, you should only use w

Freshly boiled water has a higher oxygen content than reboiled or water that has been kept at/near boiling for a long time. For best tea, you should only use water that has been boiled once (since reaching an equilibrium with dissolved oxygen at/below room temperature)