Bolognese rotolo

Name: Bolognese rotolo
Prep time: 30 min
Cook time: 1 h 5 min
Total time: 1 h 35 min
Cuisine: Italian, Mediterranean, European
Ingredients: 18.20 gm olive oil; 1 brown onion, finely chopped; 1 carrot, finely diced; 2 celery stalks, finely diced; 850g beef mince; 2 garlic cloves, crushed; 62.50 ml chopped mixed fresh herbs (see notes); 44.40 gm tomato paste; 680g bottle tomato passata; 185.63 gm red wine (optional, see notes); 50g butter; 62.50 ml plain flour; 515.00 gm milk; 375.00 ml grated mozzarella; 375g packet fresh lasagne sheets