I ma very interested in this as well. A close friend of mine raves about a hibiscus beer that she had in California, and I promised her that I would look in to it and see if there was a clone out there already.
They sell a nice one in Montreal, Le dieu du ciel. It's a very yum summer drink in winter it's not the drink of choice. This is my fav beer and fav pub. Too damned busy. But the best.