Many herbs need to be prepared in a unique manner. But like watching a film without the background music, taste without aroma is not as expressive. The healing power of many herbs, especially digestives, can be realized in part merely by the aroma of the tea. We now know that the sense of smell triggers action within the body that can have powerful and far-reaching effects. Water Good tasting water makes good tea.
Clean water is essential and in most cases the water needs to be as hot as possible to steep with.
The teapot is of concern as well as the pan used to boil the water. Most afficianados of tea never use metal for even boiling the water. We won't go into the debate of using aluminum but suffice it to say that Chinese ceramic herb pots are the favorite of many tea drinkers. Using a coffee maker is not suggested neither are the use of microwaves. Unless you're running out the door with your tea in a commute mug, relax and immerse yourself in the cup.