Heat the sesame oil in a large pot over medium heat. Add the garlic and grated ginger and cook for 1 minute until fragrant.
Add the sliced mushrooms and cook for 3 to 4 minutes until they begin to soften.
Pour in the vegetable broth and bring the mixture to a gentle simmer.
Place the miso paste in a small bowl and ladle in about 1/2 cup of the hot broth. Stir until the miso dissolves completely, then return the mixture to the pot.
Add the cod pieces to the simmering broth. Cook for 4 to 5 minutes until the fish turns opaque and flakes easily.
Remove the pot from the heat and stir in the sliced green onions just before serving.
merknader
Dissolve the miso fully in a small amount of broth first to avoid clumps in the final soup. Add the cod toward the end of cooking so it stays tender rather than breaking apart. Leftovers reheat gently on the stovetop over low heat; avoid boiling, which can make the fish tough. If you want a deeper mushroom flavor, use a mix of shiitake and cremini.Course: Soup
Cuisine: Asian
Equipment: Large pot, Knife, Cutting board, Measuring cups, Small bowl