Having soaked a fresh kidney in cold water and dried it in a
cloth, cut it into mouthfuls, and then mince it fine. Dust it with
flour. Put some butter into a stew-pan over a moderate fire, and
when it boils put in the minced kidney. When you have browned it
in the butter, sprinkle on a little salt and cayenne pepper, and
pour in a very little boiling water. Add a glass of champagne or
other wine, or a large tea-spoonful of mushroom catchup, or of
walnut pickle. Cover the pan closely, and let it stew till the
kidney is tender. Send it to table hot in a covered dish. It is
eaten generally at breakfast.