Originally Posted by jib71
You mention that your tea is green ... but I am wondering if it might be a very lightly fermented oolong. (Taiwan is famous for Oolong teas - and they come in many varieties - from the lightly fermented spring oolong all the way to nearly "black" heavily fermented oolong).
Thanks very much for that
jib71.
You're quite right, there is nothing to say that the tea is green, a presumption on my part. What comes out is straw coloured, and now that you've mentioned it, the sweet cinnamon 'flavour'/fragrance could be from a very light fermentation.
The front of the pack (the box) has 4 characters which in Japanese share meanings for (an abrevation of) Africa - Ri (the measurement) - Mountain - Tea.
Inside, on the pack itself, the same characters are used alongside three others: High - Mountain - Tea (which is much more straightforward

).
I'll continue experimenting.