Marcella Hazan's Ragu

3 tbsp extra virgin olive oil

2 tbsp onion, finely chopped

2 tbsp celery, finely chopped

2 tbsp carrot, finely chopped

350g (12oz) minced lean beef, preferably chuck or neck

salt

300ml (10fl oz) dry white wine

110ml (4fl oz) milk

1/8 teaspoon freshly ground nutmeg

1 x 400g (14oz) tin Italian tomatoes, roughly chopped with their own juice.