Celery croquettes

Cook together a tablespoonful of flour and one of butter, and when they bubble pour upon them a cupful of milk. When this is thick and free from lumps pour it gradually upon the beaten yolks of two eggs. Now add a cupful of celery cut (not chopped) into tiny bits, season with celery salt and white pepper and turn out to cool. When cold form with floured hands into small croquettes, roll these in cracker-dust, then in beaten egg, again in cracker-dust and set aside for an hour before frying in deep, boiling cottolene or other fat, always brought gradually to the boil.