Season the steaks well with salt and pepper on both sides. Heat a splash of oil in a frying pan over a medium heat and fry the steaks for about 2 minutes on each side for medium. Remove steak from the pan and allow to rest for 5 minutes.
In the same pan that you fried your steaks, heat a small amount of olive oil and start to fry the shallots, garlic and wild mushrooms over a medium heat for 3-4 minutes until cooked then add the nob of butter and chopped parsley.
In a clean pan with a splash of oil gently fry your duck egg to your liking.
Thinly slice your steak and neatly assemble on a plate with you mushrooms and duck egg.