Chorizo Bolognese Pasta

Bring an 8-quart stock pot of water to a boil and generously season with salt. Cook pasta according to al dente package instructions. Reserve 1/2 cup pasta water. Drain pasta. In a large sauté pan over medium heat, cook chorizo using a wooden spoon to help break it up. Cook until sausage releases oils and begins to brown, about 2 minutes. Using a slotted spoon, transfer chorizo to a plate. Add garlic, onions, carrots, and celery; cook until softened. Add beef, 1/2 teaspoon salt, and 1/2 teaspoon pepper; break up beef with wooden spoon and cook for 2 to 3 minutes. Add chorizo, tomato paste, and crushed tomatoes. Bring to a boil and simmer for 5 to 10 minutes. Stir in pasta and parsley. Add pasta water as needed if sauce is too thick. Top with mozzarella, drizzle with olive oil and serve immediately.