Best Bolognese

Ingredients

• medium onion, chopped
• celery stalk, chopped
• small carrot, peeled, chopped
• extra-virgin olive oil
• ground beef chuck , patted dry
• Kosher salt
• thinly sliced pancetta, finely chopped
• dry white wine
• tomato paste
• bay leaf
• of finely grated nutmeg
• homemade chicken stock or low-sodium chicken broth
• whole milk
• fresh tagliatelle or pappardelle, or dry rigatoni
• finely grated Parmesan , plus more for serving