All you need to do is pop the soup and mushrooms in the microwave. The umami of the onion soup becomes beautifully absorbed into the mushrooms. Enjoy the fall season with a bunch of mushrooms!
Using an onion soup stock, I made this mushroom-packed soup.
Microwaving the soup with raw mushrooms in plastic wrap, then allowing it to steam makes the umami of the soup evenly absorb into the mushrooms!
Enjoy Japanese food around the world.