Set the water to boil in a pot.
Peel the potatoes and carrot and cut them into cubes. Add them to the pot. Let them boil until soft - 15 minutes.
Meanwhile, slice the mushrooms and add them to a pan with heated the olive oil. Add the onion, garlic and thyme. Cook over medium heat for 10-12 minutes.
Once the vegetables are cooked, turn off the heat. Remove them and put them in a blender with a little bit of the boiled water and the protein powder (if you do not use protein powder, add 4 teaspoons of cornstarch).
Process everything until a fine cream is formed. Pour the cream back into the pot and stir.
Add the coconut milk, sesame oil, miso paste and soy sauce. Mix.
If needed, add a little more soy sauce. I did not use salt for this recipe, as both the soy sauce and miso paste are very salty.
Add the cooked mushrooms and mix. Your soup is ready!