Commonly called herb tea, a tisane is a tealike drink made by steeping any of various herbs, flowers, spices, etc. in boiling water. Such brews have long been used for their calming and rejuvenating qualities. Some of the herbs more commonly used for tisane blends are balm, chamomile, hyssop, mint and tansy. Tisanes can be found in health-food stores, often under the label "herb tea. "