Mock Terrapin Soup

If you don't have terrapin on hand, try mock terrapin soup instead.

Chop into small pieces two pounds of roasted or boiled beef, put into a saucepan, pour in one breakfast cupful each of milk and wine, and add two ounces of butter rolled in flour, two or three tablespoonfuls of made mustard, and a little grated nutmeg. Place the saucepan on the fire, boil for about fifteen or twenty minutes, turn into a tureen and serve.