Toast and grind the walnuts. Save a few pieces as garnish.
Mix the prepared corn and fava beans in a large salad bowl.
Chop the red onion and add to the beans and corn.
In a separate bowl, whisk together the miso, mirin, balsamic vinegar, agave oil and and ginger until smooth.
Add the ground walnuts and stir until well-combined. You may need a few tablespoons of water to thin the dressing.
Taste and adjust accordingly.
Transfer the salad to a serving dish and garnish with some of the chopped walnuts and red onion.
Serve the dressing on the side for each to serve themselves.
http://www.vegalicious.org/2012/04/20/corn-and-fava-bean-salad-with-a-walnut-miso-dressing