Marinate salmon in sake for at least 1 hour. This will help remove any unwanted fishy smell or taste
1-2 TBSP sake, 1/2 lb salmon
In a large pot, bring dashi stock to a boil.
3-4 cups dashi stock
Add salmon, potato, and daikon then continue to cook on high until pot returns to a boil. Once boiling, reduce to simmer and let cook for ~10-15 minutes. Use a spoon or a sieve to skim off the white foam that floats to the top. This will help remove any bitterness or fishy taste from the soup.
1/2 lb salmon, 1 medium potato, 1/2 lb daikon
Add any other ingredients being used and return to a simmer. About 5 minutes.
3-4 napa leaves, shiitake mushrooms, green onions, tofu, enoki mushrooms, bok choy
Take a ladle of the dashi stock out and mix the miso paste in the stock until dissolved. Pour the diluted miso paste back into the pot and allow to continue simmering. About 5 minutes. Try to avoid letting this come to a full boil in order to avoid killing the probiotics in the miso. If it happens, though. That's OK. It won't ruin the flavor and other nutrients of the soup.
2-3 TBSP white miso paste
Ladle into bowls and serve!