Add butter and olive oil to cooking pot
When butter is melted, add onion and carrot. Saute until soft, not browned. Add a couple teaspoons of salt.
Add beef mixture and stir until browned.
Add 1/2 bottle of wine and stir, simmer for 20 minutes.
Add diced tomatoes and stir to mix.
Add milk and simmer, don't boil, for about 30 minutes.
Turn off the heat and allow the bolognese to sit for a couple of hours. When you are almost ready to serve, get the pasta cooking. Add the cream to cooled bolognese and heat, don't boil.
When pasta is al dente, drain and reserve a few tablespoons of pasta water. Do not rinse your pasta. Add olive oil and salt to the pasta.
Plate your pasta and add a ladle of bolognese and parmesan cheese if you'd like.
Serve with a fresh salad and glass of wine!