Phil in SF quoted A Fatal Grace by Louise Penny (Chief Inspector Gamache, #2)
"I don't mind tea," Clara raised her mug to them, "even tisane, but I hate to think what goes into the one Mother offers each year."
— A Fatal Grace by Louise Penny (Chief Inspector Gamache, #2) (Page 176)
New word: tisane
(Archaic) a medicinal drink or infusion, originally one made with barley. (The word became rare until reintroduced from French in the 20th century.)