Thanks all for your answers.

> For what it is worth, the Japanese Wikipedia mentions the phyllo-
> dulcin, but does not report health concerns about drinking this tea.

Which does not mean there is no health concerns :-/


> For anybody who was confused (as I was), "hortensia" is another name
> for what I have always called "hydrangea."

Yep!

--
Julien ÉLIE

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