Prepare the bok choy by washing and chopping into bite-sized pieces.

Soak the vermicelli in warm water for 5 minutes, then drain.

In a pot, combine water, chicken stock powder, and pepper. Bring to a boil.

Add bok choy and cook for 2–3 minutes until tender.

Lower the heat and stir in soy milk and miso until well combined.

Add the soaked vermicelli and cook for another 2 minutes.