In a bowl, combine the meat, salt, and pepper and mix together with your hands. Divide the meat into 12 balls and flatten 6 of them slightly. Divide the Gorgonzola into 6 portions. In the center of each of the 6 slightly flattened balls, place a cheese portion. Place the remaining balls of meat on top and pinch the edges together. Gently flatten to make 6 patties