Nice, another unknown sipdown! Thanks to Awkward Soul for this sample :D Also, 936.
I actually remember drinking these, though it was a while back – and they were malty, chocolatey, and delicious. More on the malty than chocolate side, but quite enjoyable nonetheless. I wasn’t able to compare them to Teavivre’s or anything, but black dragon pearls seem to be a sort of black tea that works well for me, so I’d pick some up again, from either vendor.