2 sticks celery, thinly sliced
2 leeks, thinly sliced
2 tbsp chopped parsley
225g/8oz plain flour
salt and freshly ground black pepper
1 tbsp olive oil
150驳/5陆辞锄 Stilton cheese, coarsely grated
125驳/4陆辞锄 butter
450ml/16fl oz double cream
1 free-range egg
4 free-range eggs