Add the oil to a large pot over a medium high heat.
Add the ginger, garlic, green onions, mushrooms and bamboo shoots.
Cook for 1-2 minutes until tender.
Add the red pepper flakes, chicken broth, rice vinegar, tamari, pepper and salt.
Simmer for 10 minutes or until mushrooms are tender.
Stir the soup in a circular motion. Pour in the beaten eggs while continuing the stir.
Let simmer for another 1-2 minutes.
Add the guar gum following the package directions.
Stir and simmer until the soup is slightly thickened.
Stir in the shredded chicken and simmer for another 1-2 minutes.
Ladle into bowls and top with sliced green onions.