No. 5 Celery Soup
3 large heads of celery.
1 large onion.
1 potato.
3 pints water.
1 dozen peppercorns.
2 ounces butter.
¾ ounce flour.
1½ teaspoons salt.
½ pint milk.
1 pinch of mace.
Dissolve one ounce of butter in a good-sized saucepan, then add the vegetables sliced, and all the other ingredients, except flour, milk, and the other ounce of butter. Simmer for one and a half hours. Strain, thicken with flour and butter. Add milk, and serve very hot.