Panda Express Mandarin Sauce: Enjoy the bold flavors of this slightly sweet and seriously savory sauce that's as delightful on steak and pork as it is on poultry. Family owned Est 1983 Panda Express Chinese Kitchen. No MSG added except for that naturally occurring in soy sauce, flavors containing yeast extract, and hydrolyzed soy protein. No high fructose corn syrup. Product of USA.