This section is from the book "The Memorandum Cookery Book", by Countess Morphy. Also available from Amazon: The Memorandum Cookery Book.
The two kidney recipes I am giving here make extremely nice luncheon dishes, and the second one is an excellent breakfast one, making a nice change from the everlasting " Grilled kidney and tomato".
A few lambs' kidneys, a few mushrooms, 1 teaspoon of chopped onion, 1 of parsley, butter, salt and pepper, flour.
Slice the kidneys into very thin slices, and cook them in hot butter, with the finely chopped onion and parsley, and the mushrooms, also chopped. Sprinkle with a little flour, and season with salt and pepper. Add a little more butter, and cook for a few minutes longer. This does not take more than 10 to 12 minutes to do, as the kidneys are tough when overdone.