First of all, they must be perfectly fresh. If not, they have an odor, and a peculiar "tang" that the unfortunate eater never forgets, and which causes him to feel an aversion for kidneys henceforth and forever. Care should also be exercised in removing all bits of fat and gristle. Last of all, cook the kidneys in a savory way and spare no pains to make them appetizing.
Split the kidneys, wash them, drain and cut into small pieces of uniform size. Pour cold water over these and set at the side of the range, where they will come slowly to a boil. Just before the boiling point is reached turn off the hot water, substitute cold, and bring to the boil. Drain the kidneys and keep them hot while you cook together a tablespoonful of browned flour and the same quantity of butter. When these are blended pour upon them a scant teacupful of salted boiling water, and stir until thick and smooth. Now add salt and pepper, a teaspoonful of kitchen bouquet, the same quantity of Worcestershire sauce, a half-teaspoonful of lemon juice and a tablespoonful of currant jelly. Turn the kidneys into this and stir until very hot.
Skin and slice three pairs of lambs' kidneys. Cut into halves fourteen canned mushrooms. Heat together a cup of bouillon and a half-cup of the liquor from a can of mushrooms. Cook together in a saucepan a tablespoonful, each, of butter and browned flour, and when these bubble pour upon them the bouillon and mushroom liquor. Stir to a thick sauce and add a tea-spoonful of Worcestershire sauce, the same quantity of tomato catsup, a half-teaspoonful of onion juice, salt to taste and a dash of paprika. Now stir in the mushrooms and sliced kidneys. Cook for five minutes after the boil is reached, stirring constantly.
Cut three pairs of lambs kidneys into halves. Fry eight thin slices of bacon until done; remove from the fire and keep hot while you fry the halved kidneys in the bacon fat. Cook slowly for ten minutes, turning often. Remove the kidneys and keep hot with the bacon while you stir a teaspoonful of Worcestershire sauce and the same quantity of catsup into the gravy left in the pan.
Put crustless slices of toasted bread on a platter, lay the kidneys on these, pour the gravy over them and dispose the crisp slices of bacon about the edge of the platter.
Cut the kidneys into thick slices. Melt a little butter and stir into it a saltspoonful of mustard and a dash of lemon juice. Dip each slice of kidney in this, roll in cracker dust, and set aside until this coating stiffens. A half-hour will be long enough. Broil on a small gridiron over a clear fire, turning often that the kidneys may not burn. Be sure they are thoroughly done. Serve very hot.
Cut the kidneys in halves, remove all the fat and cover the kidneys with hot water, bring to the boil and drain. Cover with more hot water, again bring to the boil and drain. Repeat this process a third time. Remove them from the liquor, slice thin, and thicken the gravy with browned flour rubbed smooth with two teaspoonfuls of butter. Return the kidneys to the gravy, and when very hot add pepper, salt, two tablespoonfuls of mushrooms, minced, two teaspoonfuls of Worcestershire sauce, a little lemon juice, and two tablespoonfuls of sherry. Serve immediately.
Split the kidneys, trim off all fat and cut each kidney into quarters. Melt three tablespoonfuls of butter in a frying-pan, sprinkle the kidneys with pepper and salt and roll each piece in flour before laying it in the frying-pan. Cook, turning often, until brown. Lay upon a hot platter and add to the grease in the pan a wineglassful of sherry, a quarter of a teaspoonful of onion juice and a tablespoonful of mushroom catsup. Boil this sauce up once, and pour it over the kidneys.
Split the kidneys, put over the fire in cold water, and bring to a rapid boil. Drain, wipe and slice each half. Cut the same number of thin slices of bacon the same size and freed from rind and hard lean. Arrange the bacon and kidney slices alternately on small skewers or stout straws, and broil them quickly. Send to table on the skewers.