Ripped from the web- ABC news article

Japanese green tea buyers are getting a taste of billy tea, and they do
not like it.

Tea leaves grown in Victoria's north-east destined for the cups of
Japan's fussy green tea drinkers have delivered a strange but
unmistakeable flavour.

Tony Austin, who farms at Mt Beauty in Victoria's Alps, says
Australia's 11 green tea growers must find a way of making sure the
green tea is not tainted with gum leaves.

"In some testing in Japan, their taste testers found this particular
flavour that they didn't like," he said.

"Whatever they found that came from eucalyptus trees and what had
happened was that during the season, leaves had blown off trees, as
they do, and had lodged in the canopy of the green tea.

"At harvest time when they were harvested, as well as getting new the
shoots of the green tea in the harvest machine, the odd gum leaf went
in there as well."

link for above-
http://www.abc.net.au/news/newsitems...1/s1546384.htm