Homemade Egg Drop Soup

Name: Homemade Egg Drop Soup
Ingredients: 4 cups organic chicken stock or homemade chicken stock; ½ teaspoon sesame oil; ½ teaspoon salt; Pinch of sugar; Pinch white pepper; 5 drops yellow food coloring (optional, but if you want the look...); ¼ cup cornstarch mixed with ½ cup water; 3 eggs, slightly beaten; 1 scallion, chopped; 1 tablespoon cilantro, chopped (optional)