fresh lemon juice
225g/8oz mushrooms sliced
110g/4oz onion finely chopped
2 tbsp freshly chopped flatleaf parsley
salt and freshly ground pepper
150ml/录 pint chicken stock (preferably homemade)
110g/4oz white flour
1-2 tbsp olive or sunflower oil
110g/4oz butter
6-8 croutons made with white bread pan fried in clarified butter or olive oil
300ml/陆 pint sour cream or light cream
900g/2lb pork fillet
60ml/2 陆 fl oz dry white wine