Directions:
Soak one pint of beans over night, drain, add cold water and rinse thoroughly. Fry two tablespoons of chopped onion in two tablespoons of butter, put in with the beans, add two stalks of celery or a piece of celery root and two quarts of water. Cook slowly until the beans are soft, three or four hours, add more boiling water as it boils away; rub through a strainer, add one-eighth teaspoon of pepper, one-fourth teaspoon of mustard, a few grains of cayenne. Heat one tablespoon of butter in saucepan with two tablespoons of flour, then two-thirds cup and then the rest of the soup gradually; cut a lemon (removing seeds) and two hard-boiled eggs in slices and serve in the soup.