In a bowl mix together eggs, vegetables, ham and soy sauce.
Heat a skillet with a little bit of oil or cooking spray and add 1/3 cup of the egg mixture. Cook either as you would a pancake, once lightly browned on one side flip and brown the other, or fold as you would an omelet. Repeat until the egg mixture is gone.
To make foo yung sauce – Add chicken broth, soy sauce, vinegar and sugar to a saucepan. Bring sauce to a boil. Meanwhile, combine cold water and cornstarch in a small bowl. When the sauce starts boiling, stir in the cornstarch mixture. Cook, stirring until sauce is thickening and bubbling.