Is this white flaky powder in this tea "vanilla flavor"? I got some tea from Thailand as a gift, and it has some vanilla flavor to it:



Obviously, it smells a lot like vanilla. This is how the tea looks like:



Is the white powdery stuff (looks a bit flaky when it's larger), mostly on the left this "vanilla flavor"? Is this natural vanilla, or synthetic? If it's not the white stuff, what is it?
I don't think so. This looks like very low quality 'tea', where they put in ground stalks instead of (only) leaves. Given that quality, there could be any other 'ingredients' in it.