01 - Heat olive oil in a large heavy-bottomed pot over medium heat. Add onion, celery, and carrot. Sauté for 6 to 8 minutes until vegetables soften and become translucent.
02 - Stir in minced garlic and cook for 1 minute until fragrant.
03 - Increase heat to medium-high. Add ground beef, breaking it up with a spoon. Cook 6 to 8 minutes until browned and no longer pink. Drain excess fat if necessary.
04 - Stir in tomato paste and cook for 2 minutes. Add red wine, simmer for 2 to 3 minutes, scraping up browned bits from the pot.
05 - Add crushed tomatoes, beef broth, oregano, basil, bay leaf, and optional sugar. Season with salt and pepper.
06 - Reduce heat to low and simmer uncovered for 45 to 60 minutes, stirring occasionally until sauce is thickened and flavors meld.
07 - Stir in whole milk and simmer an additional 5 minutes to enrich the sauce. Adjust seasoning as needed.
08 - Meanwhile, cook pasta in a large pot of salted boiling water according to package directions 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 - Plate the pasta topped with grated Parmesan and chopped parsley as desired. Serve immediately.