Cut the beef into one and a half inch cubes.
Blend the salt, pepper, 5 spice powder and ginger.
Toss the beef cubes in the spice mixture
Set the the Instant pot to saute, once it gets hot add the beef and brown it in two batches
Pour in the chicken broth, add the ginger and fish sauce
Place the lid on the Instant Pot
Set the Instant Pot to Beef, Stew and let it cook for 35 minutes
Chop up the bok choy, Napa cabbage and scallions
When the beef is finished and the timer goes off , vent the steam and remove the lid
Set the Instant Pot to saute
Add the bok choy, Napa cabbage and white part of the scallion and simmer for 5 minutes
Drain and rinse the shirataki noodles and add them to the Instant Pot. Simmer for 2 minutes
Serve the soup with a garnish of cilantro, the green part of scallions and sprouts