Cook the pancetta. Heat 2 Tbsp olive oil in a large Dutch oven over medium-high heat. When hot, add 4 oz diced pancetta. Cook, stirring occasionally, until crispy on all sides, about 5-7 minutes. Use a slotted spoon to transfer the pancetta to a bowl.
Cook the soffrito. To the pot, add 4 Tbsp unsalted butter. Once melted, add diced onion, carrot, and celery, then season with ½ tsp kosher salt. Cook for 5 minutes, stirring occasionally, until the vegetables have softened. Add 5 cloves chopped garlic, stir, then cook 1 minute more.
Add ground meat. Add 1 lb ground pork and 1 lb ground veal, then season with 1 tsp kosher salt and ½ tsp black pepper. Cook for about 8-10 minutes, stirring often and breaking up the meat with a spatula as needed.
Deglaze the pan. Pour in 1½ cups dry white wine, allowing it to reduce and evaporate, about 3-4 minutes. Don’t worry, all the flavor stays behind!
Skim the fat. Once the wine reduces, you’ll see excess fat float to the top of the pan. Use a spoon to skim the fat, then discard. This will yield about ½-¾ cup of fat. Removing this makes the white bolognese sauce less greasy. Return the cooked pancetta to the pot.
Add the liquid. Pour in 2 cups of chicken stock (or vegetable stock) and 2 cups half-and-half. Stir in 2 Tbsp chopped fresh rosemary, 2 Tbsp chopped fresh sage, 1 Tbsp fresh thyme leaves, 1 bay leaf, and ¼ tsp ground nutmeg.
Simmer. Reduce the heat to medium, then simmer for about 45 minutes. Give the ragu a stir occasionally and lower the heat as needed if it begins bubbling too much.
Finish the bolognese. Remove the bay leaf, then taste and adjust seasoning as needed, adding more kosher salt or pepper if you like.
When ready to serve, cook pasta. Cook pasta according to package directions for al dente, meaning just slightly undercooked by 1-2 minutes. This is important! Before draining, reserve 1 cup of pasta cooking water. Drain pasta, do NOT rinse, and set aside.
Cook with pasta in the sauce. Transfer as much bolognese as you want to a large skillet. Heat over medium high heat until bubbly. Add all dente pasta directly to the pan along with ¼ - ½ cup mascarpone cheese, the zest of 1 lemon, and lots of grated Parmesan (the amount will depend on how much pasta you add – start with ¼ cup and go up from there). Cook, stirring or shaking the pan often, so that each piece of pasta is completely coated with sauce. To finish, add a couple tablespoons (more if making a lot of pasta) of the reserved pasta cooking water to help bind the sauce together. The starch from cooking the pasta will thicken the sauce!
To serve: Divide the pasta between bowls, then serve with a drizzle of extra virgin olive oil, chopped rosemary, freshly grated Parmesan or Pecorino Romano, and a pinch of flaky sea salt. I know it sounds like a lot, but this is what makes the pasta sauce exceptional! Love black pepper? Add as much as you like. Enjoy!