Combine all the ingredients in a large mixing bowl and knead well with clean hands until fully combined.Form into approximately 20 meat balls, roughly the size of a golf ball.Heat a few tablespoons of cooking fat in a large heavy skillet set over medium heat. Sear the meatballs, 10 at a time, until nice and golden all around, about 4-5 minutes. Reserve the par-cooked meatballs to a shallow bowl while you sear on the others.Once all the meatballs have been seared, return them to the skillet, lower the heat and continue cooking the meatballs, turning them from time to time, until they are cooked all the way through, about 10 minutes.Serve hot.