I just tried Mighty Leaf's new blend, Chocolate Mint Truffle. It's pretty good and I'm glad to see that they've added it to their line. Right now, it's only available at World Market and online at MightyLeaf.com, but I hope that they will add it to their food service offerings, as so many restaurants only do bagged teas and Mighty Leaf's silken pouches are amongst the best.
However, I've noticed that chocolate-mint rooibos has become quite a popular blend lately, and I think it has been done better before. For example, Tay Tea's Better Than Sex blend made waves as the 2007 and 2008 NYC Coffee & Tea Festivals, and not just because of its name. It has Belgian dark chocolate bits, peppermint, vanilla and marigold petals, plus a fantastic aroma. Yum! I recently sampled a chocolate-mint rooibos Urbana Teas and Tonics is about to add to its offerings that was pretty impressive, too.
I never thought I would say this about a flavored tisane, but I think that Mighty Leaf's new rooibos is not flavored enough. Wait, wait... Hear me out. Hot cocoa (when done well) is rich, satisfying and (some may say) divine. (It was literally considered to be divine by ancient Aztecs.) So why flavor a tea or tisane with chocolate unless you can compete with such a decadent beverage? Lightly flavoring rooibos with chocolate and mint won't cut it for cocoa lovers, especially when you put "Truffle" in the name. You need depth and complexity. It doesn't have to come from the chocolate itself -- it could be from mint, floral elements (like Tay's marigold petals), vanilla or other flavors -- but it needs to be in there for the beverage to be as satisfying as a cup of cocoa.
For all you future chocolate-rooibos blenders out there -- Need inspiration? Check out Vosges' Drinking Chocolates, MarieBelle's Spicy Hot Chocolate or Jaques Torres' Wicked Hot Chocolate for starters. There are lots of flavors that go well with chocolate... I promise.