I'm wondering if it was at HEB central market... If I remember I'll swing by there when I'm in town this weekend.
I found a couple places online - but they were outrageous.. either in price or shipping.. :(
There was a big HEB central market in Austin that I just loved!
I found a tea place here in Tulsa on the trendy "Cherry Street" strip that has it. It'll be expensive, everything is on Cherry Street...but it's worth it! I make it last...it's not an "every day" tea for me, unfortunately.
I used to get it at a little British grocery in Broken Arrow, Oklahoma...no kidding! The lady that owned the store was British and it was like walking into another country!