Heat the olive oil in a Dutch oven over medium heat. Add the finely chopped pancetta, chopped onions, celery, and carrots. Stir and cook until the vegetables are soft, about 10 minutes.
4 tablespoons extra-virgin olive oil, ½ cup pancetta, 1 onion, 2 celery stalks, 1 carrot
In the same pot, add the ground beef and cook it while breaking it apart with a wooden spoon until it's all browned. Season with salt and pepper and stir in the wine.
1 pound ground beef, Salt and pepper, 1 cup dry white wine
Add the tomato paste and cook until it starts to caramelize, a couple of minutes. Pour in the crushed tomatoes, chicken stock, bay leaf, nutmeg, and Parmesan rind (if using).
⅓ cup tomato paste, 1 cup San Marzano crushed tomatoes, 1 bay leaf, ½ teaspoon grated nutmeg, 2 cups chicken broth, 1 piece Parmesan rind
Bring everything to a simmer and let it cook at medium-high temperature for about 10 minutes
Discard the bay leaf, add the milk, and cook for 10 more minutes. Adjust the taste with salt and reserve.
1 cup whole milk
Make the pasta according to package directions and serve with the Bolognese and grated Parmesan cheese.
2 pounds spaghetti, 4 tablespoons Parmesan cheese
Serve warm and enjoy!