In anticipation of this month's COTM discussion, I just got Mario Batali's "Italian Grill" from my local library. There are a few recipes that call for the use of a piastra -- an Italian griddle surface made from granite. I'm intrigued enough to want to try one, but I can't seem to find them available anywhere. The website referenced in the book (italiankitchen.com) is down and the product is not available on Amazon or anywhere else I can see.
So I'm wondering if anyone has any experience using a piastra, and, if so, what your take is. What kind of a product do you use? It seems that a cast iron griddle can be used, but I liked the idea of granite because it's rustproof. Any recommendations? Thanks!