1kg/2lb 4oz carrots, peeled, finely chopped
8kg/18lb floury potatoes, peeled and cut into even-sized pieces
10 large onions, peeled, chopped
8 tbsp finely chopped parsley
300驳/10陆辞锄 plain flour
4 tbsp Worcestershire sauce
4.5 litres/8 pints beef stock
150ml/5fl oz sunflower oil
300驳/10陆辞锄 tomato pur茅e
400g/14oz butter, cubed
450ml/16fl oz milk
5kg/11lb lean beef mince