Wipe the kidneys and slice them, put them in a stewpan with the stock and mushrooms.
Lay the latter on the dish, place the rumps round upon the rice, the narrow ends towards the middle, and the kidneys between.
Take the kidneys out of the gravy, and cut them into six slices.
I have seen the fat from the kidneys in my water many years ago.
Hexanephric: with six kidneys, or ...