Turn the steaks over and fry for 1–2 minutes on the other side (for medium), or longer until cooked to your liking. Transfer the steaks to a warmed plate and set aside to rest for 5 minutes.
Cut the kidneys, in half, snip out the white cores and cut the kidneys into roughly 1.5cm/¾in pieces ... stick frying pan and fry the steak, in batches, over a medium heat, adding extra oil ...