Sweet and sour sauce is tasty with stir-fried meats or as a dipping sauce. Learn how to make this flavorful sauce at home. Ingredients needed are rice vinegar, brown sugar, ketchup, soy sauce, corn starch, water chooped green pepper and chopped pineapple. You can serve it over a stir-fry, or use it as a dipping sauce for dumplings or egg rolls. This is an Asian sauce.