Beef cannelloni

Name: Beef cannelloni
Prep time: 25 min
Cook time: 1 h 50 min
Total time: 2 h 15 min
Cuisine: Italian
Ingredients: 8-10 cannelloni tubes; 25g finely grated parmesan; 2 tbsp olive oil; 1 carrot finely chopped; 1 celery stick finely chopped; 1 onion finely chopped; 2 garlic cloves crushed; 2 tbsp tomato purée; 500g beef mince; 1 glass red wine; 1 bay leaf; 400g tin chopped tomatoes; 200ml beef stock; 100ml whole milk; 25g unsalted butter; 25g plain flour; 400ml whole milk; grating of nutmeg