Grind the veal and set to the side or purchase already ground.
Add the carrot, onion and celery ("mirepoix") to an 8-cup food processor and process until very finely minced. Set to the side.
Mise en place the ground veal, diced pancetta, butter, mirepoix, bone broth, salt, black pepper, nutmeg, flour, and Parmigiano Reggiano close to where you cook so they can be quickly added to the dish.
Add the serving plates to the oven and put the oven on "warm."
Bring enough water to comfortably boil the pasta up to a vigorous boil. Season the water with salt after it is boiling. Keep it at a boil. Cover if necessary to prevent over-evaporation.
Bring a 12-inch skillet up to high heat. Once the skillet is properly preheated, add the pancetta. Sauté the pancetta for 20-30 seconds to release some fat. Next add the mirepoix. Sauté for 1 minute then add the butter. Stir until the butter is completely melted, about 1 minute.
When the butter is completely melted add the veal and break it up and spread it around the skillet. Season with salt, black pepper, and nutmeg to taste. Stir to combine the seasonings. Sauté until the ground veal is fully cooked through, about 2 minutes.
*For 6–9-minute pasta, add the pasta to the water and cook it ¾ of the way through.
Next sprinkle the flour over the top and stir to combine. Sauté and allow moisture to evaporate and a fond to form a crust on the bottom of the skillet, about 1-2 minutes.
Deglaze the skillet with bone broth. Scraping the bottom of the skillet with a wooden spoon/spatula to release the fond into the Bolognese.
Reduce the Bolognese by ¼ or more per your taste, roughly 2-3 minutes. The Bolognese is complete. Keep it warm on low heat.
As the pasta reaches the ¾ cooked point crank the heat all the way up to high on the Bolognese. Reserve the pasta water and remove the pasta from the water and add the pasta directly to the Bolognese. Add 1 cup-1⅓ cup of pasta water to the combined pasta and sauce.
Over high heat finish the pasta in the Bolognese until the pasta is al dente. The time for finishing the pasta in the Bolognese will vary but the hallmark of completion will be the Bolognese coating the noodles. Once the Bolognese is coating the pasta, season with additional salt, black pepper, and copious amounts of Parmigiano Reggiano to taste.
Serve on warmed plates. Garnish with more black pepper and Parmigiano Reggiano.