Japanese Miso Soup with Potato and Leek
(Jagaimo to negi no miso-shiru)
This is a nice Japanese miso soup that is very accessible to "westerners" but drop dead authentic. It's nice because it observes the custom of one floating and one sinking ingredient. Serve hot to 4 people as a course.
Pour off 1/2 cup dashi and whisk miso into it. Slowly stir back into the soup. Remove from heat just before the soup comes to a boil and ladle immediately into soup bowls, distributing vegetables evenly. Serve immediately.