Start by frying the onion and the garlic in a little oil until soft.
Set aside to cool once done.
Throw the meat into a large mixing bowl along with the egg yolks, the bread crumbs, the fried onions and garlic, salt and pepper.
At this stage you can throw in anything you like - cheese, spinach, spices, grated carrot or grated potatoes - anything you think will hold together.
Mix everything up with your hands and shape into small balls.
Chef's tip 1: The trick to making sure the balls don't fall apart is to throw the balls repeatedly between your hands just hard enough not to break them. This takes the air out of them and you get a nice compact meatball.
Next we're going to roll the meatballs in seasoned plain flour, fry them lightly and then stick them into the oven on medium.
Put a handful of flour in a large plate and season with salt and pepper and roll the meatballs around one at a time shaking off excess flour by again passing the balls gently between your hands.
Fry a few meatballs at a time for around 10 minutes on medium heat. Turn to make sure they brown all around; add oil as necessary.
Now they're ready to go into the oven for around 20 minutes to make sure they cook through.