How to Make It
In a small bowl, soak the bread in the milk until softened, about 10 minutes.
In a large bowl, combine the veal with the scallions, garlic, salt and pepper. Squeeze the bread dry and add it to the veal. Using your hands, mix the ingredients thoroughly and shape into 30 meatballs. Transfer to a baking sheet.
In a large skillet, melt the butter. Add the sage leaves, laying them flat, and cook over moderately high heat until crisp, about 2 minutes; transfer to a plate.
Dust the meatballs lightly with flour and shake off the excess. Add the meatballs to the skillet and cook them over moderate heat until browned all over and cooked through, about 12 minutes. Transfer to a platter and keep warm.
Add the wine to the skillet and simmer over moderately high heat, scraping up the browned bits on the bottom of the skillet, until almost evaporated, 5 minutes. Add the vegetable stock and simmer until slightly reduced, about 2 minutes. Transfer the meatballs to a platter and pour the pan sauce over them. Garnish with the fried sage leaves and serve.
These meatballs are also delicious when made with ground pork or a mixture of ground pork and veal.