Bolognese sauce

Name: Bolognese sauce
Prep time: 10 min
Cook time: 40 min
Total time: 50 min
Cuisine: European, Italian, Mediterranean
Ingredients: 80 g celery, trimmed and cut into pieces (2 cm); 2 garlic cloves; 1 carrot (approx. 170 g), cut into pieces (2 cm); 1 brown onion (approx. 180 g), cut into halves; 50 g olive oil; 250 g pork mince (coarsely minced - see Tips); 250 g beef mince (coarsely minced - see Tips); 1 fresh bay leaf; 2 tsp Vegetable stock paste (see Tips); ¼ tsp ground black pepper, to taste; 1 tbsp dried oregano; 50 g red wine; 100 - 150 g tomato paste; 400 g canned chopped tomatoes; 1 sprig fresh basil, leaves only, for serving (optional); 100 g Parmesan cheese, grated, for serving (optional)