Combine all ingredients for the dressing in a bowl except the soy sauce. Mix well. Taste. If it needs more salt, add the soy sauce. Miso paste can vary significantly in saltiness. The soy sauce is there to add extra saltiness if you need it. Also, the dressing is thicker than a vinaigrette. It should be the thickness of ranch or caesar. Set aside.
Spring Herb Salad
Toss all your ingredients (except the flowers) in a large bowl. Add half of the dressing. Mix well to coat. Add more to your liking and serve the rest on the side. Garnish with the optional edible flowers.