Step by step
Green pitted olives, eggs, chopped celery-carrot-onion, ground beef (mixed chicken-pork-beef), parsley, grated lemon zest, grated Parmesan cheese, nutmeg.
Tips
Be very careful how you slit open the olives: do it so that the cut does not allow the filling to leak out, nor end up with an olive cut in half.
Trivia
Latin authors such as Marziale and Catone cited the special varieties of olives that were used to prepare this delicacy.