Step 1

Preheat the oven to 350°. In a large bowl, combine the bread pieces with the milk and mash to a paste. Add the whole egg, egg yolk, chopped parsley, sage, thyme, salt, black pepper, nutmeg and cayenne and stir until smooth. Add the Parmigiano-Reggiano and dry bread crumbs and stir until thoroughly combined.

Step 2

In a medium skillet, melt the butter. Add the onion and cook over moderate heat until softened, about 7 minutes. Add the garlic and cook just until fragrant, 1 minute longer. Let cool, then transfer to the bowl. Add the lamb, pork and veal and knead until evenly combined.

Step 3

Brush a medium oval baking dish with oil. Transfer the meat loaf mixture to the dish and pat it into a 4-by-12-inch oval loaf. Bake for about 50 minutes, or until firm but not quite cooked through.

Step 4

Meanwhile, in a medium saucepan, combine the red wine with the sugar, chopped tomato, molasses and allspice and bring to a boil over moderate heat, stirring to dissolve the sugar. Boil until the glaze is thick and syrupy, about 15 minutes.

Step 5

Brush half of the glaze over the meat loaf. Continue baking for about 20 minutes longer, until an instant-read thermometer inserted in the center registers 150°; brush once more with the remaining glaze during baking. Let the meat loaf rest for 15 minutes, then thickly slice and serve.