"Herbal teas—less commonly called tisanes (UK and US /tɪˈzæn/, US also /tɪˈzɑːn/)—are beverages made from the infusion or decoction of herbs, spices, or other plant material ...
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in hot water.
The term "herbal tea" is often used in contrast to true teas (e.g., black, green, white, yellow, oolong), which are prepared from the cured leaves of the tea plant, Camellia sinensis. Unlike coffee and true teas (which are also available decaffeinated), most tisanes do not naturally contain caffeine." - (en.wikipedia.org 31.07.2021)
