Pasta Bolognese

Name: Pasta Bolognese
Prep time: 30 min
Total time: 30 min
Cuisine: Italian
Ingredients: 1/4 cup extra-virgin olive oil, divided; 1 medium onion, finely diced; 1 medium carrot, finely diced; 1 medium celery rib, finely diced; 2 ounces pancetta, thickly sliced, finely diced; 0.5 pound ground beef; 0.5 pound ground veal; 0.25 pound ground pork; 2 garlic cloves, chopped; 0.75 cup dry white wine; 1 (28-ounce) can peeled Italian tomatoes, seeded and finely chopped, juices reserved; 1 cup chicken stock or canned low-sodium broth; 0.5 teaspoon dried thyme; 1 bay leaf; Salt and freshly ground black pepper; black pepper; 0.25 cup heavy cream; 2 pounds penne rigate; Freshly grated Parmesan cheese for serving