1Place the bread slices in a bowl and soak with milk. Prepare the meat by removing the casing from the longaniza, then place the meat in a bowl and add the eggs, garlic powder, grated cheese, breadcrumbs, and the bread slices after squeezing out the excess milk.
2Mix everything, cover, and refrigerate.
3Form the meatballs and coat them with flour.
4Fry the meatballs in a pan with a splash of extra virgin olive oil until golden on the outside but still slightly raw on the inside; remove and set aside on paper towels.
5In the same pan, add the finely chopped onion, carrot, and garlic. Season with salt and cook over medium heat until it begins to brown.
6Incorporate the tomato sauce, mix, and pour in the wine. Cook for a few minutes and blend the sauce.
7Return the sauce to the pan, add the meatballs, broth, and bay leaf.