Cantonese Creamed Corn Soup

Name: Cantonese Creamed Corn Soup
Prep time: 15 min
Cook time: 15 min
Total time: 30 min
Cuisine: Asian, Chinese
Ingredients: 1 tablespoon cornstarch; 2 tablespoons water; 5 cups homemade chicken stock (or store-bought chicken broth); 1 1/4 cups canned creamed corn; 1/4 teaspoon salt (to taste); 1/4 teaspoon white pepper (or black, or to taste); 1/2 teaspoon granulated sugar; 2 teaspoons rice wine (or dry sherry); 3/4 cup crab meat (cooked, or cooked diced ham); 2 egg whites (lightly beaten); 1/2 teaspoon sesame oil (or to taste); Optional: 2 green onions (or spring onions, finely chopped)