Kidneys with Sour Cream

Description
In Romanian: Rinichi cu smantana

Ingredients

 * 1 beef or 2 veal or pork kidneys (approx 1 1/4 lbs/600 g),
 * 1 small onion,
 * 1 tablespoon butter,
 * 1 cup sour cream,
 * 1 level teaspoon flour,
 * 1/2 cup meat broth,
 * salt

Directions

 * 1) Prepare the kidneys as for Kidney dish.
 * 2) Fry the onion with the butter until yellow, add flour, mix, then add meat broth.
 * 3) To this sauce, add sour cream, salt and kidney pieces.
 * 4) Simmer until the kidneys are done.