Tisanes

Herbal teas — much less commonly called herb teas or tisanes (UK and US /tɪˈzæn/, US also /tɪˈzɑːn/) — and fruit teas are beverages made from the infusion or decoction of herbs, spices, fruits, or other plant material in hot water. They do not usually contain caffeine.

The tea industry often confusingly uses the term fruit tea to refer to what are in fact fruit-flavored black teas, not fruit teas.

Herbal teas and fruit teas should not be confused with true teas (black, green, white, yellow, oolong, etc., which are prepared from the cured leaves of the tea plant, Camellia sinensis), as well as from decaffeinated tea, in which the caffeine has been removed.

Like beverages made from true teas, herbal teas can be served hot or cold. Documents have been recovered dating back to ancient Egypt and ancient China that discuss the enjoyment and uses of herbal teas. Among the Chinese, herbal teas are commonly known as liang cha (Chinese: 涼茶; pinyin: liáng chá; Jyutping: loeng4 caa4).

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Wikipedia