Oyster Sauce

Blanch one quart of oysters by bringing them to a boil in their own liquor; drain them, saving the liquor; wash them in cold water, and set them away from the fire until you are ready to use them; stir one ounce of butter and one ounce of flour together over the fire until they form a smooth paste, strain into them enough of the oyster liquor and that the chicken was boiled in to make a sauce as thick as melted butter; season with a teaspoonful of salt, quarter of a saltspoonful of white pepper, and the same of grated nutmeg; put in the oysters, and serve.