Heat a frying pan and put some vegetable oil on it. You need to prepare a pan with a lid. You need it later.

Wash a mushroom and put on the pan. The cap down and the gills up.

Put the butter on the gillss, lid and keep heating. Don’t forget to turn on the fan, I got fire alarm

When you see the butter melt well, put the soy sauce on the gills and the butter and the soy sauce well mixed together.

Carefully take out he mushroom from the pan and place on your dish. If you have dried parsley, it will look the dish nicer.

Enjoy Umami from the mushroom.

I tried with just salt, without butter and soy sauce, it was very simple and still just nice.