"piya" > wrote in
:

> have been drinking a ?cooked pu-erh... chun ming tuo with blue
> lettering on the wrapper....
>
> after brewing, and drinking, the leftover tea turns a blue colour
> after some hours...
>
> when drunk, the stuff looks and tastes fine...
>
> why ???? (should I continue to drink it ??)
>
> thanks, Andrew

The questions about PH could be answered by making the tea in distilled
water, if it's worth the trouble. Me, I think I would apply the motto,
"What you don't know may hurt you a whole lot" to the sitation, and throw
the tuo out -- it's only 100g of tea. You don't know what's causing the
blue tinge. Why should it only emerge after several hours if it's due to
the lettering? Dunno, but I wouldn't mess with it.

Ozzy