- Start by heating the unsalted butter over medium heat in a large pot. 
- Once melted, add in the ground beef and pork. 
- Cook until browned, breaking it apart as it cooks. 
- Add the diced carrot, celery, minced garlic, and chopped onion to the pot. 
- Sauté until the vegetables become soft and aromatic. 
- Pour in the canned tomatoes, crushing them slightly with a spoon as you stir them into the mixture. 
- Add the tomato paste and beef broth. 
- Bring the mixture to a gentle boil, then reduce the heat to let it simmer. 
- Stir occasionally and let it cook for about 1 to 1 1/2 hours, allowing the flavors to meld together. 
- Serve your delicious bolognese over pasta and top with grated Parmesan cheese.