Sweet and Sour Sauce

1/3 cup white or rice vinegar (Note: rice vinegar gives better results)
4 tablespoons brown sugar
1 tablespoon ketchup
1 teaspoon soy sauce
2 teaspoons cornstarch mixed with 4 teaspoons water

Mix together vinegar, brown sugar, and ketchup; bring to a boil. Mix cornstarch and water add to other ingredients to thicken. If redder color is desired add food coloring