Hot and Sour Tofu Soup

Name: Hot and Sour Tofu Soup
Prep time: 15 min
Cook time: 20 min
Total time: 35 min
Cuisine: Asian, Japanese
Ingredients: 3 tablespoons red wine vinegar; 2 tablespoons cornstarch; 3 cups chicken broth; 0.5 cup water; 0.5 cup sliced bamboo shoots, drained; 8 dried shiitake mushrooms, rehydrated; 1 clove garlic, crushed; 1 (1/2 inch) piece fresh ginger root; 2 teaspoons soy sauce; 0.25 teaspoon red pepper flakes; 2 ounces firm tofu, diced; 1 egg, beaten; 2 green onions, chopped