Get ingredients ready for preparation and use.
In a large pot, pour in 5 cups of water and add celery chunks. Bring to a boil and allow the celery to boil for 5 minutes (lid covered). While the celery cooks, prepare any other ingredients.
At the 5-minute mark, add sweet potato chunks and continue boiling (lid covered) until the sweet potato chunks have become tender (should take roughly 5-7 minutes).
Just before the celery and sweet potato is done, heat 2 cups of water in a smaller pot.
Once the celery and sweet potato is ready, drain out any water from the pot and add contents to your blender. Add in shallot, thyme leaves, cumin powder, salt, and pour in heated water. Blend until desired consistency is reached. Taste test and flavor to your liking.
Sprinkle some additional thyme leaves on top, and your soup is ready for serving!
As always, try as best you can to procure and use organic ingredients. Make sure to rinse and clean your produce properly before use.
You may consider using dulse flakes in place of any salt.