Sauce

One cup of milk heated and thickened with one tablespoon of corn starch, the liquor from the fish (if none, double the quantity of butter), one large spoonful of butter, one raw egg, one spoonful of any kind of catsup, a pinch of cayenne pepper, and one of mace. Put the egg in last and very carefully boil one minute. When the pudding is entirely cold, take from the mold and pour the sauce over it. Slice it after it goes to the table.