In a heavy saucepan(8 qt preferred, 6 qt in a pinch), heat olive oil and butter over medium heat.
Add onion, celery,carrots, and garlic til vegetables are translucent.
Add beef, pork, sausage and pancetta and brown over high heat for 10-15 minutes.
Reduce heat to low medium, and add tomatoes, tomato paste, wine, beef stock and chicken stock. When sauce boils, reduce to a simmer.
Simmer for about 3 hours ( no lid).
Season with salt and pepper. Sauce can be cooled and frozen ( in 1/3 batch per container, for 1 lb pasta each).
If entire batch is served, bring to a simmer, add 1 cup extra heavy whipping cream and simmer for an additional 10 minutes, then serve over your favorite pasta.
For 1/3 batch containers, thaw and bring to a simmer. Add 2-3 oz of extra heavy whipping cream and simmer for 10 minutes, then serve with your favorite pasta.
Find any recipe, add your own, make grocery lists easily from recipes. Enter any 3 ingredients and BigOven will tell you what you can make. It's free! (4.5/5 stars)