Slow-simmered Sunday meat sauce with pork, beef, and tomato is southern Italy's weekly ritual. This high protein mediterranean sauce freezes perfectly for family meal prep throughout the week.
In a large Dutch oven over medium heat, add olive oil. When shimmering, brown the pork shoulder and beef chuck pieces on all sides for 8–10 minutes total. Set meat aside.
Add diced onion, carrot, and celery to the pot. Sauté over medium-low heat until soft and fragrant, about 7 minutes. Stir often to prevent browning.
Add tomato paste and cook, stirring constantly, for 2 minutes to deepen the flavor. Pour in the red wine, scrape up any browned bits, and simmer until reduced by half.
Return the meats to the pot. Add crushed tomatoes and bay leaves. Season with kosher salt and black pepper. Bring to a low simmer, cover partially, and cook on the lowest heat for 3 hours, checking and stirring every 30 minutes.
Remove the lid and simmer for an additional 30–45 minutes to concentrate the sauce, adjusting heat as needed to maintain a gentle bubble. Discard bay leaves. Shred the meats into the sauce or serve in large chunks, as desired. Taste and adjust seasoning before serving.