Heat the butter in a large pot over medium-low heat. Add the salt, onion, and carrots. Saute for 5 minutes, or until just starting to get soft and golden. Add the garlic; saute for 30 seconds. Add the meat and oregano. Cook the meat, breaking it up as you go into small pieces, until there is almost no red left, about 10 minutes.
Add the milk. Increase the heat to medium-high and bring it to boil, then reduce the heat so that it maintains a gentle boil (the milk should be bubbling but in no danger of burning or boiling over). Cook the milk down for 20-30 minutes.
Add the wine. Again increase the heat to bring it to a boil and then lower the heat to maintain a gentle boil. Cook the wine down for 20-30 minutes.
Add the pureed whole tomatoes and crushed tomatoes. Bring to a simmer and then lower the heat so that the sauce is just occasionally bubbling. At this point you can leave it on the stove on very low heat (I usually move it to a small burner on low) or put it in the oven at 325F, either way with the pot uncovered so the sauce will cook down. Simmer the sauce for 4-5 hours, stirring occasionally.
Serve with a wide pasta such as pappardelle or fettuccine and top with parmesan cheese, basil, and parsley.