Meat broth

Name: Ragu bianco pasta
Prep time: 10 min
Cook time: 50 min
Total time: 60 min
Ingredients: 400 g spaghetti; 350 g ground beef; 150 g salsiccia (Italian sausage); 400 ml meat broth; 50 g carrots; 50 g onions; 50 g celery; 1 tbsp cornstarch; 300 ml dry white wine; 2 tbsp olive oil extra virgin; 1 sprig rosemary; salt (to taste)