This is as fast as food gets! Award-winning cookbook author Hiroko Shimbo tells us how to make the easiest miso soup. “I want to have this soup right now!” she tells us.
Just have some dashi stock or high-quality (if not made-from-scratch) chicken stock on hand. Water as the soup base works, too, if you must, but Hiroko—ever the purist—says that that’s the “worst case” scenario.