The classic Bistecca all Fiornentina is a large porterhouse steak that usually weighs about 1 kilo (2.2 pounds). In Tuscan restaurants the steak is offered by the "etto" or in 100 gram (4-ounce) increments. This great steak includes the strip loin and the fillet. When shopping for this dish, use the best meat, gray sea salt, course grind black pepper and the best balsamic vinegar that you can afford. The marriage of flavors from all of these ingredients will reveal a noble meal of authentic Italian cookery. <br></br> As is true for all steak, to ensure a juicy, flavorful steak that cooks quickly, have the meat at room temperature before starting. Use a grill or thick cast iron pan and make sure that they are very hot. Always let the meat rest, at least 5 minutes, before carving and a sharp knife will glide right through.