Prepare Dashi Stock: Begin by warming 4 cups of dashi stock in a medium-sized pot over medium heat. This forms the base of your miso soup.
Rehydrate the Wakame: Place 2 tablespoons of dried wakame seaweed in a small bowl with water. Let it soak for about 5 minutes until it expands and softens. Once ready, drain the excess water.
Dice the Tofu: While the wakame soaks, dice 1/2 cup of tofu into small, bite-sized cubes. This step ensures even distribution throughout the soup.
Mix Miso Paste: In a separate small bowl, take 3 tablespoons of miso paste. Add a little warm dashi stock from the pot to the miso and mix until smooth. This helps dissolve the paste without forming lumps.
Combine Ingredients: Lower the heat to prevent boiling. Add the rehydrated wakame and diced tofu to the dashi in the pot. Stir gently to avoid breaking the tofu.
Add Miso Mixture: Slowly add the miso mixture to the pot. Stir well to blend the flavors while making sure the soup does not boil, preserving the miso's nutrients and flavor.
Finish with Green Onions: Finally, sprinkle the thinly sliced green onions over the top before serving for a fresh, aromatic touch.