1. Simmer the barley in the water and stock 45 minutes.
2. Meanwhile, sauté celery, ramps and garlic in the olive oil 10 minutes.
3. Add the sautéed ingredients and all the remaining ingredients except the miso into the simmering ingredients and simmer another 5 minutes.
4. Turn off the heat, lower a strainer part-way into the soup, and stir the miso against its sides with a whisk or wooden spoon until the miso is dissolved.