Use a spoon to peel the skin off the ginger root.
Slice the onion in half, peel off the outer paper layer of the onion.
In a dry hot cast iron skillet, place the onion and ginger, and char all sides.
Place the onions, ginger, sugar, salt, five spice, fish sauce, and bone broth to the pressure cooker pot, cover with the lid.
Make sure the pressure cooker lid is sealed.
Set the pressure cooker to the HIGH setting for 30 minutes.
Quick released the pressure valve.
Remove the onion and ginger from the broth.
Blanch your rice noodles to package specifications.
Poach your shrimp until cooked through.
Place noodles, shrimp, and whatever extras you enjoy in your pho into a bowl.
Ladle the broth over the noodles and shrimp.
Enjoy!