Bring stock to low boil in a medium deep pan. Whisk in miso until disolved
Add Kombu, ginger, garlic, chili and sweet peppers, Sake, white pepper, and mushrooms. Bring to boil and reduce to simmer. Cook for 10 minutes
Place fish in pan and cook for 5 minutes or so depending on the fish. Spoon cooking liquid over fish as it cooks to cook the top
Remove fish when done and place in a warm serving bowl
Add the leafy vegetables to broth and cook till done.
Ladle broth mixture into bow and garnish with onion