In large stock pot, heat olive oil over medium heat.
Add onion, carrot, celery and saute until softened (8-10 minutes)
Stir in ground beef, Italian sausage and pork and cook until no longer pink (approximately 10 minutes)
Pour in red wine, bring to boil to allow alcohol to evaporate
Add tomato sauce, tomato puree, sea salt and black pepper. Bring to boil.
Reduce heat, cover with lid and simmer gently for 2.5 to 3 hours.
Taste every hour or so for seasoning. Add additional salt and pepper to taste.
In a large bowl, place your hot cooked pasta and then begin adding the Ragu sauce (you will not need all of it) until you feel like there's a good sauce to pasta ratio. Add a ladle full or two of hot pasta water to the bowl as well...tossing gently.
Add about 3/4 cups of freshly chopped parsley to the mix.
Pour mixture into a nice large platter.
Top with a bit more sauce, freshly grated parmigiano-reggiano cheese and the remaining fresh parsley.