Prepare the Ingredients: Chop the onion and dice the potato. Rinse the quinoa briefly and drain well.
Simmer the Vegetables: In a medium pot, add the onion, potato, quinoa, dashi powder, and water. Bring to a boil over medium heat, then reduce the heat and simmer for 8–10 minutes, or until the quinoa is tender and the potatoes are cooked through.
Add Tomato Juice: Pour in the tomato juice and bring back to a gentle simmer.
Add the Miso: Turn off the heat. Add the Miso: Turn off the heat. Add miso paste and stir it until dissolved.
Serve: Pour into bowls, and enjoy warm!
Notes
Storage: Store leftovers in an airtight container in the refrigerator for up to 3 days.
Rinse the quinoa briefly to remove any surface bitterness.
Always add the miso after turning off the heat, as boiling it can reduce its delicate aroma and flavor.
If the soup tastes a bit light, add a touch more miso paste for extra flavor. If it’s too salty, add a little water until it tastes right to you.