This is a classic of Roman cuisine...our version of street food. Luscious rice balls stuffed with meat and cheese. As you bite into the supplì the cheese stretches out and resembles a telephone cord; hence the name "al telefono". Originally the meat used was chicken gizzards, but nowadays many people make supplì with ground veal. Often mushrooms and mortadella are also added to the filling.
Sauté the ground veal in olive oil until cooked through.