Trim the root of the shimeji mushrooms and separate them.

Heat half of the salad oil (1/2 tbsp) in a frying pan over medium heat, pour in the beaten eggs, and stir gently until semi-cooked. Remove the eggs from the pan.

Add the remaining salad oil (1/2 tbsp) to the pan and heat. Stir-fry the shimeji mushrooms over medium heat until softened. Add the bean sprouts and stir-fry for about 1 minute. Add soy sauce and pepper, and stir quickly.