Herbal teas, known as tisanes, have a history as long as tea itself, but the two are distinctly different drinks. Tisanes are caffeine-free beverages that don’t contain any tea. Instead, they contain fresh or dried flowers, leaves, fruits, seeds and/or herbs that are steeped in boiling water. In short, they’re not really teas at all, even though most of us – including the tea gurus here at Revolution – call them herbal teas.