In a soup pot, combine broth, celery, onion, ginger, peppercorns, turmeric and msg. Bring to a boil and reduce to a simmer.
After 20 minutes, strain or remove ingredients from the broth.
Bring broth back to a boil and add the frozen potstickers. Stir to keep them from sticking to the pot. If using fully cooked potstickers, they should be heated through in about 3 minutes.
Add bok choy and cook another 2 minutes. Stir in chopped green onion.
Serve soup with soy sauce and sesame oil for garnish