Slow-cooked Meatballs in Tomato Sauce

Name: Slow-cooked Meatballs in Tomato Sauce
Prep time: 20 min
Cook time: 3 h 40 min
Total time: 3 h 40 min
Yield: 4 portions
Ingredients: 60 g Parmesan cheese; 300 g lean beef mince; 300 g pork mince; 1 tsp dried oregano; ¼ tsp ground black pepper; 1 - 2 tsp fine sea salt; 3 garlic cloves; 20 g olive oil; 200 g brown onions; 50 g red wine; 800 g tinned chopped tomatoes; 50 g tomato purée; 5 g sugar