01 - Heat olive oil in a large heavy-bottomed pot over medium heat. Add onion, carrot, and celery; sauté until softened, about 7 to 8 minutes.
02 - Incorporate minced garlic and cook for 1 minute until fragrant.
03 - Raise heat to medium-high. Add ground beef and cook, breaking it up with a spoon, until browned and no longer pink, approximately 6 to 8 minutes.
04 - Stir in tomato paste and cook for 2 minutes. Pour in red wine and simmer for 3 to 4 minutes until slightly reduced.
05 - Add crushed tomatoes, broth, oregano, basil, bay leaf, sugar, salt, and pepper. Mix thoroughly.
06 - Bring mixture to a gentle simmer, partially cover, and cook for 45 to 60 minutes, stirring occasionally. Remove lid during the last 15 minutes to thicken sauce.
07 - Stir in whole milk and simmer an additional 5 minutes. Remove bay leaf and adjust seasoning as needed.
08 - Meanwhile, cook pasta in a large pot of salted boiling water following package instructions until al dente. Drain, reserving ½ cup of pasta water.
09 - Toss pasta with Bolognese sauce, adding reserved pasta water as needed to achieve desired consistency.
10 - Serve immediately, garnishing with freshly grated Parmesan and chopped fresh basil or parsley if desired.