Wash spinach, bean sprouts, and oyster mushrooms thoroughly.
Blanch spinach in boiling water, squeeze out the moisture, and season with salt and sesame oil.
Blanch the bean sprouts in boiling water, then season with salt and sesame oil.
Cut oyster mushrooms into bite-sized pieces, add a little oil to a pan, and stir-fry them.
Place hot cooked rice in a bowl and top with spinach, bean sprouts, and oyster mushrooms.
Mix in gochujang (Korean chili paste) and sesame oil to taste and enjoy.