Turkey Tom Kha Gai

Ingredients : 6 cups turkey broth 2 stalks lemongrass bruised and sliced 1 (3 inch) piece fresh ginger sliced 2 tablespoons chopped fresh cilantro stems 2 kaffir lime leaves sliced or more to taste ½ teaspoon red pepper flakes or more to taste 1 pound cooked turkey cut into small...