Creating miso soup is simple, and these steps will guide you through the process:

1. Prepare Dashi: If using dashi powder, dissolve it in 4 cups of water in a pot. If using pre-made dashi, skip this step.
2. Heat the Broth: Bring the dashi (or water) to a gentle simmer over medium heat.
3. Add Tofu: Carefully add the cubed tofu into the simmering broth. Allow it to heat through for about 5 minutes.
4. Incorporate Mushrooms: Add the sliced mushrooms to the pot and let them cook for an additional 3-5 minutes until tender.
5. Mix in Miso: In a separate bowl, take a ladleful of the hot broth and whisk in the miso paste until smooth.
6. Combine: Pour the miso mixture back into the pot. Stir well to blend it evenly into the soup.
7. Add Seaweed: Introduce the rehydrated wakame to the soup, allowing it to soak up flavors for another minute.
8. Garnish: Turn off the heat and add the sliced green onions, stirring gently to combine.
9. Taste and Adjust: If desired, add a couple of drops of soy sauce or sesame oil for added flavor.
10. Serve: Ladle the miso soup into bowls, making sure to include tofu, mushrooms, and green onions.

With these easy steps, you will have a delicious bowl of miso soup ready to be enjoyed.