1. Take Pleurotus eryngii, cut into squares (use another), and cut into large slices.
2. Heat a pan and put butter over a low heat;
3. Add sliced eryngii mushrooms, sprinkle a little salt and fry;
4. Fry the eryngii mushroom slices on both sides until about coke, fold them into a flat plate and lay flat.
5. Add steak for one person and fry on both sides over medium heat;
6. Take out the steak and arrange it into pieces, put it in the pot, and add black pepper sauce;
7. Stir evenly over low heat and shovel into the eryngii mushroom slices.
