In Japanese cuisine, unlike other national cuisines, much attention is paid to preserving the original appearance and taste of products. This is achieved by the correct selection of spices and not too long time of heat treatment of products.
Wash oyster mushrooms and champignons, cut into slices, fry in butter for 3 minutes on high heat. Then add the soy sauce and simmer on low heat under the lid until tender.
Peel the onion, wash it, cut it into slices. Wash the green onions and finely chop them. Peel the garlic, wash it, cut it into slices. Arrange the mushrooms on plates, sprinkle with garlic and green onions.