Panda Express Sweet and Sour Sauce is a delicious condiment perfect for enhancing your favorite dishes. The sweet and tangy flavor of this sauce is sure to liven up a variety of cuisines. Panda Sweet and Sour Sauce: The balance of the sweet and sour kicks the flavor up a notch in any dish. Enjoy! No high fructose corn syrup. No MSG added except for that naturally occurring in soy sauce, flavors containing yeast extract, and hydrolyzed soy protein.