1 carrot, finely chopped
1 celery stick, finely chopped
1 onion, finely chopped
300ml/10fl oz beef or chicken stock
400g/14oz penne
30g/1oz plain flour
1 bay leaf
salt and freshly ground black pepper
freshly grated nutmeg, to taste
4 tbsp olive oil
2 tsp tomato pur茅e
30g/1oz unsalted butter
35驳/1陆辞锄 butter
75驳/2戮辞锄 骋谤耻测猫谤别, grated
350ml/12fl oz milk
75驳/2戮辞锄 Parmesan, finely grated
400g/14oz lean beef mince
50g/1戮oz cubed pancetta
250ml/9fl oz red wine