Wash bean sprouts under running water and drain.

Clean shrimp and marinate with 1 tbsp mirin and a pinch of pepper.

Beat 2 eggs with a pinch of salt until smooth.

Mix 2 tbsp oyster sauce, 1 tbsp soy sauce, and 1 tbsp minced garlic to prepare the sauce.

Slice green onion and onion into thin pieces.

Heat 2 tbsp cooking oil in a pan and scramble the beaten eggs. Set aside.

Heat another 2 tbsp cooking oil in the pan and sauté green onion and onion.

Add marinated shrimp to the pan and stir-fry until cooked through.

Add bean sprouts, scrambled eggs, and prepared sauce to the pan. Stir-fry until combined.