Cook the Chicken: In a large pot, bring the chicken broth to a rolling boil. Add in the chicken breasts and let them simmer until fully cooked, approximately 15 minutes. Once done, remove and shred the chicken.
Build the Flavor: In the same pot, add sliced mushrooms, bamboo shoots, soy sauce, rice vinegar, and chili paste. Let it simmer for another 5 minutes, allowing the flavors to meld beautifully.
Thicken the Soup: Stir in the cornstarch mixture, ensuring to mix well. This will thicken the soup and make it heartier.
Add the Egg: Gradually pour in the beaten egg, stirring gently to create ribbons in the soup.
Final Seasoning: Taste your brilliant creation! Season with salt and pepper according to your liking.
Serve: Ladle the soup into bowls and garnish with sliced green onions and fresh coriander for a pop of color and flavor.