Ingredients：
Beef: 350g
King oyster mushroom: 1 piece
Black pepper and sea salt: 1 tablespoon (combined)
Steps：
1. Choose a fresh piece of ribeye. Cut the beef into cubes and marinate with cracked black pepper.
2. Wash the king oyster mushroom and cut it into chunks.
3. Heat a little oil in a pan, sear the beef cubes until they change color and are cooked through, then remove and set aside.
4. Using low heat, sauté the mushroom chunks until they turn soft and golden.
5. Return the beef cubes to the pan and toss with the mushrooms.
6. Just before serving, season with an extra sprinkle of black pepper and sea salt to taste.