2 carrots, cut into chunks
2 celery stalks, trimmed, cut into chunks
陆 lemon, cut into quarters
1 onion, cut into six
potatoes and roasted vegetables, to serve
275ml/陆 pint chicken stock
1 tbsp plain flour
salt and freshly ground black pepper
dash vegetable oil
30驳/1录辞锄 butter
1 x 2kg/4陆lb whole chicken
small bunch fresh mixed herbs (sage, thyme and rosemary)