Hot and Sour Soup

INGREDIENTS

• 6 cups chicken stock
• 1/4 lb julienned lean pork or 1/4 lb chicken
• 2 tablespoons garlic and red chile paste
• 2 tablespoons soy sauce
• 3/4 teaspoon ground pepper
• 4 eggs, beaten
• 5 tablespoons cornstarch
• 1 cup sliced shittake mushroom
• 1 can peeled straw mushroom
• 1 can sliced bamboo shoot
• 1 can sliced water chestnuts
• 1 can baby sweet corn cob
• 1/2 lb soft tofu, sliced into 1/4 inch cubes
• 1/4 cup white vinegar
• 1 teaspoon sesame oil
• finely chopped scallion (to garnish)