Interesting. And I find some curious pronunciations and sources for tisane:
tĭ-zān'
tĭ-zän'
(Fr.) tee-zan'; barley water, from Old French
from Latin ptisana, tisana
see ptisan: a nourishing decoction, originally one made from barley, purported to have medicinal quality. Origin: 1350–1400; < L ptisana < Gk ptisánē peeled barley, barley water; r. ME tisane < F < L, as above
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