Maurice!

Hey mate!

Tea contains very small quantity of volatile oils that contributes
greatly to the aroma and favours.

But I doubt if this is what you are seeing ...

If the tea is panfried, or roasted, whichever way you call it, they
might have used some oil in the process.

I see it in my finest longjing tea, but I am not sure if it is as much
as you described.

Julian
http://wwwa.amazing-green-tea.com